Dan Margulis Applied Color Theory
What Do We Know About Camera Raw?
Date: Wed, 4 Jan 2006 10:51:05 -0800
From: "Mike Russell"
Subject: Re: Re: Readability and teaching
Dan,
I'd like your take, either here, or in a future article
on Raw image processors. I don't question the value in having access
to the raw image. OTOH, there are a growing number of practices and
beliefs, tied to raw image processing, that are divorced from the
appearance of the final image.
IOW, the cargo cult's hold in the photographic world is
as firm as ever.
http:
//www.physics.brocku.ca/etc/cargo_cult_science.html
Mike Russell
www.curvemeister.com
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Date: Wed, 4 Jan 2006 11:15:50 -0800
From: David Cardinal
Subject: RE: Re: Readability and teaching
Sigh, this is definitely the case. I've now written
several articles for various pubs attempting to lucidly explain the
difference and when to shoot which of Raw or JPEG or both, but as with many
aspects of photography there are many people anxious to believe that
applying more technology is the most essential ingredient to improvement.
On our Forums we get many forums of the form, "Gee, I guess to get
images as good as the others I see here I need to shoot Raw". As
hopefully all of us on this list know:-), Raw is a tool, not a silver
bullet.
But Raw also helps sell hardware & software so
there is a lot of industry weight being thrown behind it which accelerates
the "stampede". One article I did in '04 that's online is:
http://www.pcmag.com/article2/0,1759,1625132,00.asp.
I've done an update
which should be available soon.
--David Cardinal
http://www.nikondigital.org
http://www.cardinalphoto.com
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Date: Wed, 04 Jan 2006 19:58:14 -0000
From:Mark Segal
Subject: Re: Readability and teaching
There are such overwhelming advantages in principle to
shooting RAW versus JPEG that off-the-top I find it difficult to see what
there is to discuss about this subject. Some of those who stake this claim
have tested the alternatives. Of course there are images for which it will
make no APPARENT difference - but there must be many others for which it
does. Unless someone is prepared to yet again slug through a representative
sample of the universe of images comparing the outcomes or post-capture
processing in RAW versus JPG, not only is there little new evidence to talk
about, but I would see this as rapidly degenerating into the kind of
inconclusive debates that have happened over 8 versus 16 bit editing and
RGB98 versus ProPhoto. Not to be misunderstood - we should remain
open-minded about such things - and if Dan can bring striking new valid
empirical evidence to the table on this subject, all the more power to him.
I am only sounding a note of caution about the high risk of this topic to
evolve in the direction of sterility.
Mark Segal
___________________________________________________________________________
Date: Wed, 4 Jan 2006 12:41:51 -0800
From: David Cardinal
Subject: RE: Re: Readability and teaching
Mark--Potential final image quality is only one aspect
of the issue. JPEGs are quicker & smaller which saves time (downloading
& processing) and money (flash cards, hard drives, backups, software).
Many work-a-day pros shoot several thousand images a day or at least a week
(I shoot nearly 100K/year, and I only spend about 1/3 of my time really in
the field), so the overhead of storing and processing NEF files can be
daunting--especially on a deadline.
The tradeoff between that and the potential image
quality difference is a real one for many photographers, depending of
course on what they shoot, how much they shoot, and what their final output
is.
Bear in mind that uncompressed Raws from high-end
D-SLRs are now over 20MB each so a 4GB card "only" holds 200 and
100K of them takes up 2 TB of storage.
--David Cardinal
http://www.cardinalphoto.com
http://www.nikondigital.org
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Date: Wed, 4 Jan 2006 16:07:44 -0500 (EST)
From: MARK SEGAL
Subject: RE: Re: Readability and teaching
OK David, quite so. No-one can question that what one
uses depends on what one needs and can manage. I was focusing on the main
issue that is open to debate.
Cheers
Mark Segal
___________________________________________________________________________
Date: Thu, 5 Jan 2006 12:14:51 EST
From: Dan Margulis
Subject: Re: Re: Readability and teaching
Mike Russell writes,
I'd like your take, either here, or in a future
article on Raw image
processors.
That's part of my standing plan, to devote two of the
remaining six columns to issues of raw workflow. I haven't decided how to
split it up between Camera Raw and other products. The problem with making
comparisons is that this is a rapidly developing area. It's not completely
clear what the market wants and not every useful feature is already in the
products.
When a product like Aperture comes out, the Camera Raw
team doesn't just sit there eating bonbons and reading romance novels. They
study what other people are doing and think about what improvements they
can put in their own next release. And every other vendor AFAIK behaves the
same way. A year from now we're going to be seeing raw modules that are
much more different from what we have now than, say, Photoshop CS2 was from
CS1, or CS3 presumably will be from CS2. So, I would rather speak in
general terms about raw manipulation rather than talk about product
specifics that are highly changeable.
If I do write this, the reason it will be late in the
year is that people have given me a ton of Camera Raw v. JPEG images for
Professional Photoshop and it will take me a long time to slog through them
all. I have some preliminary impressions but am not ready to share them.
I don't question the value in having access to the raw
image.
OTOH, there are a growing number of practices and
beliefs, tied to raw image
processing, that are divorced from the appearance of
the final image.
Certainly a number of vendors are seizing on "the
raw workflow" as the next big thing, so of course it has to be
positioned as something really indispensable. As with most next-big-thing
concepts, it will be (actually, it already is) hard to separate the real
advantages from the hype.
Dan Margulis
___________________________________________________________________________
Date: Thu, 5 Jan 2006 14:26:22 -0500
From: Henry Davis
Subject: Re: Camera Raw
On Jan 5, 2006, at 12:14 PM, Dan Margulis wrote:
That's part of my standing plan, to devote two
of the remaining six columns
to issues of raw workflow. I haven't decided how
to split it up between Camera
Raw and other products. The problem with making
comparisons is that this is a
rapidly developing area. It's not completely
clear what the market wants and
not every useful feature is already in the
products.
Dan,
I believe that it is becoming important to caution that
handing off Raw files to service bureaus is not a good practice; an even
worse practice than handing off files that are not a appropriately prepared
for the printing conditions. Most of your readers understand that
they are responsible for the outcome of their conversions, but I'm guessing
that some might not share this awareness.
Raw is more and more being misunderstood by print
customers who insist that Raw is the cat's meow in photo technology, and
that service bureaus are behind the times for not accepting Raw files.
The same thing happened with the introduction of ICC based color
management where the myth-hype of color perfection sent a message that
folks could deliver ill-prepared files and magic would happen.
So, I ask that at least a caution be offered to readers
who might not yet understand that the workflow begins with them. It
might read like the caution label on a car battery that states that one
should not drink the contents, but it might be helpful for readers to
understand the dangers.
Sorry for the vent.
Henry Davis
___________________________________________________________________________
Date: Thu, 5 Jan 2006 14:17:10 -0700
From: Ron Kelly
Subject: Re: Re: Readability and teaching
On 5-Jan-06, at 10:14 AM, Dan Margulis wrote:
If I do write this, the reason it will be late in the
year is that people
have given me a ton of Camera Raw v. JPEG images for
Professional Photoshop and
it will take me a long time to slog through them all.
I have some preliminary
impressions but am not ready to share them.
As part of your procedure Dan you should definitely
attempt to answer this question: if you know the limitations of Jpeg
post exposure, can these be compensated for at the time of the
exposure? In other words, can a skilled practioner with good
equipment get the same result going jpeg or RAW? In all situations,
or just some?
Ron Kelly
___________________________________________________________________________
Date: Thu, 5 Jan 2006 13:50:36 -0800
From: David Cardinal
Subject: RE: Re: Camera Raw
I believe that it is becoming important to caution
that handing off Raw
files to service bureaus is not a good practice; an
even worse practice
than handing off files that are not a appropriately
prepared for the
printing conditions.
Yes, it is increasingly common for photographers to be
asked to submit Raw files. The initial, sort of reasonable 'excuse', was
verifying that the image was in fact a "true photograph". Some
magazines (and photo contests) did this as a way do keep from getting
conned with fraudulent photographs (the fact that Raw files can be
generated probably hasn't troubled their sleep yet).
But more recently it has become more common practice
for stock agencies and others. We've actually added a feature to our
software product to "also submit Raw image" by request of our
users, mostly pro photographers. This is a little scary as I completely
agree that Raw files are really just piles of "colored mud" until
interpreted. So I'm not claiming this trend is a good or a bad thing, just
echoing that it is growing.
If there was a standard for interpretation of Raw data
(extended DNG or codification of the Adobe .xmp instructions or something
similar) then at least it'd be similar to the embedded profile situation,
but for right now there is no standard for interpretation, so it is
technically even more likely to result in confusion.--David Cardinal
___________________________________________________________________________
Date: Thu, 05 Jan 2006 18:38:08 -0600
From: "jimbean"
Subject: Re: Re: Readability and teaching
ron wrote:
In other words, can a skilled practioner with good
equipment get the same result going jpeg or RAW? In all situations, or just
some?
in all situations? I just returned from a last
minute project.. (you are going to love this).. I needed to
photograph a cowboy preacher, with hat and bible in-hand..at sunset with
large cross located on the side of a hill.. to cut to the chase.. he
was late.. I had less than a ten minute window to setup and make my
exposures.. I generated 148 images.. the sun had been down for about 15
minutes when I started... you tell me.. would jpeg with nearly zero
flexibility (except for problem solving via DM techniques) be your format
of choice... not mine.. I like raw.. extra hard drives are too cheap not to
take advantage of that option.. sure, if I were sitting on the edge of a
college basketball game where I had previously tested the lighting
environment and needed to generate 9+ images per second and send them over
a wireless setup.. I might default to the jpeg.. the primary reasons
for generating a jpeg in place of raw are: 1) I left my other compact
flash cards at the office and needed the extra images or 2) I was scrolling
through the endless menus on my camera and failed to return to the correct
setting, raw. enjoy the evening, jim bean
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Date: Thu, 5 Jan 2006 18:13:51 -0700
From: Ron Kelly
Subject: Re: Re: Readability and teaching
On 5-Jan-06, at 5:38 PM, jimbean wrote:
I had less than a ten minute
window to setup and make my exposures.. I generated
148 images.. the sun had
been down for about 15 minutes when I started... you
tell me.. would jpeg
with nearly zero flexibility (except for problem
solving via DM techniques)
be your format of choice... not mine.. I like raw..
Yes, this certainly sounds like an occaision where RAW
is warranted. If this is typical of what you do, then RAW is probably
the way to go.
I don't agree with you that jpeg has nearly zero
flexibility. And once you've processed a RAW file, you don't have to
"problem solve via DM techniques"?
I might default to the jpeg.. the primary
reasons for generating a jpeg in place of raw are:
1) I left my other
compact flash cards at the office and needed the extra
images or 2) I was
scrolling through the endless menus on my camera and
failed to return to the
correct setting, raw.
I could add a couple of more significant items to this
list.
-I got tired of processing images in order to show
them, use them, etc.
-I couldn't see any difference between the processed
RAW image and the jpeg I shot, if I shot it well as a jpeg.
Ron Kelly
___________________________________________________________________________
Date: Fri, 06 Jan 2006 01:25:31 -0000
From: "JONVEIGEL"
Subject: Please relieve my confusion!
Greetings!
I shoot in Camera RAW. Can the techniques outlined in
Photoshop LAB Color be applied to these .crw files? The author's comments
about CRW and LAB were just ambiguous enough to leave me even more
confused.
I hope one of can, in a paragraph or two, rip the veil
of confusion from my eyes and/or send me to a link or two!
Jon Veigel
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Date: Thu, 5 Jan 2006 17:42:56 -0800
From: Peter Figen
Subject: Re: Please relieve my confusion!
On Jan 5, 2006, at 5:25 PM, JONVEIGEL wrote:
I shoot in Camera RAW. Can the techniques outlined in
Photoshop LAB
Color be applied to these .crw files? The author's
comments about CRW
and LAB were just ambiguous enough to leave me even
more confused.
Typically, you use any of the controls that you want or
that are available in your raw processing application of choice, and then,
after you have a processed tiff in Photoshop, proceed as you would with any
other image. Because of the nature of the raw image, I don't think you can
work on it directly in Lab. Anyway I do what I just described, and on about
half of my images, use Lab corrections.
Peter Figen
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Date: Thu, 5 Jan 2006 21:00:21 -0500 (EST)
From: MARK SEGAL
Subject: Re: Re: Readability and teaching
Since I acquired a Canon 1Ds in October of 2004 I have
been using it in RAW+JPG mode, so I see both. I have made about 5000
photographs with it since I bought it. I cannot think of a single frame
worthy of post-capture processing for which I could not do a significantly
better job processing the RAW image in Photoshop rather than using the
in-camera JPG - and that is from one of the best professional instruments
on the market. Cameras simply don't process JPGs as intelligently as we can
process RAW files, and once we try to further adjust a JPG - sure there is
some flexibility, but we are nonetheless into all the well-known
constraints of the JPG format.
Mark Segal
___________________________________________________________________________
Date: Thu, 5 Jan 2006 21:00:32 -0700
From: Ron Kelly
Subject: Re: Re: Readability and teaching
I can think of several situation where jpegs are just
as good as RAW:
-any known lighting situation, such as flash, studio
lighting, indoor locations where you've been before or done lighting
tests, etc.
-most photography shot on a tripod where time and
consideration can be given to all the things necessary to make a good
shot, including white balance, exposure, focus, etc.
-most photographs where auto white balance works well,
ie most outdoor photography
Yes, this is not an all inclusive list, but it happens
to cover 98% of the photography that I do.
Your mileage may vary, particularly if you
-are a news photographer or for some reason can't plan
ahead for conditions
-have to shoot at high ISOs most of the time
-cannot bracket exposures, for whatever reason
-shoot a lot of very small faces (very large group
shots), or round man-made objects
RAW files have the most flexibility but it is at a
price. Why drive a semi-trailer everywhere you go when you can do
many jobs just as well in a car, or maybe even walk?
If you have professional equipment then certainly you
have the capability to shoot excellent jpegs. Don't want in-camera
sharpening? Turn it off. Don't like what auto white balance gives
you? Then use a pre-set, kelvin, or manual setting. Don't have enough
exposure latitude? Bracket and stack your exposures and use blending
modes, or photograph with fill-flash.
Lastly, as far as jpeg artifacting being a problem I
think that's highly over-hyped, if you shoot the highest quality
jpegs in a good camera. I have a Canon D5 and it is excellent, but
I've shot thousands with a 10D and made many fine photographs. I
don't believe that Canon are the only ones who know how to make a
good jpeg.
Jpegs have their limitations just like everything else,
so did film and so does RAW. Just because you shoot RAW doesn't give
you the ability to be sloppy, but you'll certainly pay a high price for
carrying all that data around down the line. What if you don't need to?
The buzzword these days is "workflow" which
really means that everyone is finding the file processing quite burdensome.
If you cut your lumber with some care to begin you may find it quite
helpful.
Suggestion: don't take my word for it. Don't take
somebody else's either; go and do your own tests. Make prints if that is
your end result and use that as your final evaluation, not what you might
see on the screen at 1600%.
Ron Kelly
___________________________________________________________________________
Date: Fri, 6 Jan 2006 10:53:36 EST
From: Dan Margulis
Subject: Re: Re: Camera Raw
Henry Davis writes,
Dan,
I believe that it is becoming important to caution
that handing off Raw
files to service bureaus is not a good practice; an
even worse practice
than handing off files that are not a appropriately
prepared for the
printing conditions. Most of your readers
understand that they are
responsible for the outcome of their conversions, but
I'm guessing that
some might not share this awareness.
This is really no different from handing an Adobe RGB
file to somebody you haven't vetted--it's a form of masochism. As always,
the key is to keep image manipulation out of the hands of strangers. If you
know the people involved and know that they know what they're doing, by all
means give them a Raw file. But to give an unknown service provider the
opportunity to ruin a job during a conversion is only for those who like to
play the blame game after it happens.
In fairness, the provider may be doing the same thing
in reverse. That is, a knowledgeable provider is just as right to assume
that an unknown photographer is clueless about color matters as a
knowledgeable photographer is to assume that an unknown provider is. So,
the provider may assume (correctly) that it is easier to achieve a desired
result from a raw file than from one a photographer has hacked at.
Naturally, this scenario (the photographer supplies a
raw and a "corrected" version, and the provider elects to throw
the corrected version away) is very different from one in which the
provider converts a supplied RGB file in a stupid way. In the first case
the action had best be specifically authorized by the client, because the
provider is 100% responsible for the result--if the photographer's effort
is in the trash, the photographer is off the hook.
If, OTOH, the provider can just say, look, I processed
this image in the normal way and here's what happened, then the
photographer is going to take the fall. The provider throws away the .xmp
file, drag-opens the Camera Raw file, accepts the default of automated
color correction, designates it Adobe RGB, and clicks Open. Owing to a
rather strange choice of interface design, this file immediately opens in
Photoshop *interpreted as sRGB in spite of the Adobe RGB designation*, if
the provider has his system configured to ignore embedded profiles, as so
many do. Now he converts to CMYK, prints the job, and tells the client that
the photographer was totally incompetent.
IMHO, in this scenario, the provider's conclusion is
correct, but for a different reason than what he thinks.
Dan Margulis
___________________________________________________________________________
Date: Fri, 6 Jan 2006 12:03:47 -0500
From: Henry
Subject: Re: Re: Camera Raw
Yes, there are striking similarities in the context of
workflow and responsibility between Camera Raw and ICC color management -
with AdobeRGB being an excellent example. The results of your surveys
tell it like it is, and I can affirm that print service providers are
facing even higher expectations from an increasingly inexperienced
clientele. It seems that there is some sort of strange inverse relationship
between advancements made in the tools and the willingness of the users to
use them in an appropriate manner. As I wrote to you some years ago,
the marketing promises and hype that accompany these advances hardly spend
one word about their proper uses. Now, with Camera Raw, novices are
expecting service providers to make their poor exposures meet their
expectations, and they do not see any justification for additional fees for
making this effort. They have read a bit about it, and are again
being persuaded by the marketing, that magic will take place with the click
of a button. As they see it, technology has made perfectly printed
images so easy to produce that they turn a deaf ear to print providers'
explanations regarding the truth about the subject.
After reading your reply, there seems to be a question
that is sort of begged:
Why would one who is competent to supply a corrected
Raw file not be just as competent to supply a press ready, CMYK file, thus
saving the print provider from further conversions, adjustments or mishaps?
Thanks, Dan.
Henry Davis
___________________________________________________________________________
Date: Fri, 6 Jan 2006 09:19:03 -0800
From: David Cardinal
Subject: RE: Re: Camera Raw
Henry--That's an easy one for me to answer, at least
for myself and others with similar lines of business. Many, many
photographers have extensive experience with RGB based color and color
correction, but little or no experience with CMYK. A second reason is that
of course providing a press ready CMYK also assumes that they know
something about the particular output device and process, which they may
not.
To take me as a simple example, I'm barely literate in
CMYK and send many images into a variety of publications & clients. I
can provide a corrected RGB file no problem--many years of experience in
that, but not only would I not be competent to create good CMYK files for
their various presses, but frankly the editors or buyers I work with
probably wouldn't even know what specs to give me or even (in some cases)
what country or plant or press the output will be printed on. Sometimes
(say a book or annual report) I may send in the images months before they
even know how it will be printed. Or for magazines they might print in
different languages in different countries on different equipment, etc.
So personally I'm happy to stay in RGB for my client
work, although of course for printing I need for my business (postcards,
brochures, etc.) I have to beard the lion and produce CMYK, but it is
always with some trepidation!--David Cardinal
___________________________________________________________________________
Date: Fri, 6 Jan 2006 13:01:31 -0500
From: David Barr
Subject: Re: Re: Camera Raw
I agree with what you say about the photographer
preparing a high quality digital file. However, final conversion that would
be done by the photographer would be to a generic CMYK and CMYK
conversion by the printer would ensure that the best file is prepared for
their press.
I have only one client that requests RAW files and I
include on the CD an Adobe RGB that I have processed in Phase One software,
it is then up to them to use which they prefer. The majority of my
clients wouldn't know what to do with a RAW file.
David Barr
--
Photobar Agricultural Stock Photography
Simplify your Search http://www.photobar.com
___________________________________________________________________________
Date: Fri, 6 Jan 2006 01:18:48 -0500 (EST)
From: "Ivan Histand"
Subject: Re: Readability and teaching
I think the thing we forget is that all digital cameras
alway shoot in RAW, and in fact almost all contain a very powerful and
efficient RAW processor.Ê By this I mean that the raw data comes off the
CCD no matter what, and the question is do we want the camera to process
it, or just save it to the cardÊ as-is and process it later.
My camera contains almost exactly the same RAW
processing controls as the software on my computer.Ê It's got everything
from color space to sharpening, noise reduction to color mode, resolution
to compression. Ê I can even upload one or more custom curves to apply to
the images. Ê And it does all this at 8 frames per second.ÊÊÊ My computerÊ
doesn't even start to think about processing a RAW in 1/8 of a second.Ê I
measure the time it takes in number of cups of cappucino I can drink while
running a batch.Ê The power of the in-camera raw processors is truly
amazing, it really shows what you can do with a properly designed
integrated hardware/software solution.
So I think the answer is that a skilled
practitioner CAN produce the same result in JPEG as he/she could in RAW, in
almost all cases.Ê But you really have to have your ducks in a row, if not
it is surely nice to have all that extra data to play with. Ê Bottom line,
shooting JPEG requires a lot more skill.ÊÊ That's probably why a lot of
pros use JPEG, EG David Cardinal.Ê
Do I shoot JPEG?ÊÊ Nope, I'm not skilled enough
with the camera.Ê Maybe someday.ÊÊ I sure will save a lot of $ on hard
drives and cappucino.Ê
Ivan Histand
___________________________________________________________________________
Date: Fri, 6 Jan 2006 11:28:12 -0700
From: Ron Kelly
Subject: Re: Readability and teaching
Ivan:
I would agree with you mostly.
Saving on hard drives and cappucino are not to be
discounted, but the real cost of RAW is your time.
Ron Kelly
___________________________________________________________________________
Date: Fri, 6 Jan 2006 13:12:42 -0500
From: Henry
Subject: Re: Re: Camera Raw
David,
I see your point, but still it seems to me that one who
is proficient in making biscuits ought not be too troubled with making corn
bread.
Henry Davis
___________________________________________________________________________
Date: Fri, 6 Jan 2006 14:19:45 -0500
From: Henry
Subject: Re: Re: Camera Raw
David,
Thank you for your response.
I'll venture that very few of your clients are indeed
mind readers, and printing companies are less than eager to expend
resources in guesswork.
Problems arise during explanations for the differences
found in the printed version vs. expectations that are based on the display
of larger color spaces - even when the best separations are made for the
print conditions.
It is understandable that photographers and print
brokers desire the mythical scan or capture that can be used for anything
and everything, but it's not reality, and worse, it can be a real drag for
all concerned. I'll offer an example, and leave color out of the
scenario altogether:
The photographer's project is for a multi-page brochure
for an automobile manufacturer. The photographer, in an effort to
increase his margin, decides to handle the layout, providing files to the
print provider. Each page of the brochure will contain 30 - 1.0 x 1.5
inch pictures of cars.
When the print run is delivered, the main complaint is
that the cars don't look sharp and snappy like they should. The
previews looked much sharper, and the files had sufficient resolution,
therefore, the printing service must have messed up the job.
The problem turns out that each picture was practically
right out of the camera, weighing in at 36MB in RGB but reached 48MB after
conversion to CMYK. Now, may I say, regardless of advances in
processing power and cheap space etc., this is not only a bad practice, but
it could also be considered bad etiquette to put 30 of these monsters on a
page.
The reason for the poor edges was because of the
excessive resolution. Now, this one is a real zinger to try to explain to
some folks, but there is simply a maximum resolution that an imagesetter
can utilize. I can attest that this very situation has been growing along
with the growth rate of the resolution of digital cameras. As cameras
have gone from 4 to 6, to 8, to 12 megapixel and so on, there is little or
no thought given to resolution at print size - except by print providers
who are all too aware of the issue.
You may have heard people say, "a scan is a scan
is a scan", or "a good digital camera file can be used for lots
of diverse purposes". If they are shot and prepared properly,
there is great flexibility to be had from them. But it does take some
effort, and this is the part that is being missed. Don't
misunderstand - the real pros who are in the know understand their
responsibilities and provide properly prepared files. But, like Dan's
survey shows, we are getting more and more poorly prepared files. My
concern is that this situation will continue to grow unless a better effort
at education takes foot.
Henry Davis
___________________________________________________________________________
Date: Fri, 6 Jan 2006 11:23:32 -0800
From: David Cardinal
Subject: RE: Readability and teaching
The power of the in-camera
raw processors is truly amazing, it really shows what
you can
do with a properly designed integrated
hardware/software solution.
Amen to that. I'm always amazed when I compare the
difference between the
speed of my camera processing images & how long
they take on my "state of
the art" computer!
shooting JPEG requires a lot more skill.ÊÊ That's
probably
why a lot of pros use JPEG, EG David Cardinal.Ê
In the spirit of full disclosure, I shoot Raw (or
Raw+JPEG) much more often
than I used to (from 2000 to 2003 I pretty much shot
only JPEG). This is for
several reasons:
1) I'm doing more large format "art"
printing, where the extra control of
the Raw file, control over noise reduction, lack of any
possible JPEG
artifacts (although I think with the new cameras they
are really almost
invisible) is worth something to me.
2) Compressed Raw on the Nikons is now exactly as fast
as uncompressed Raw,
and frankly isn't much larger than the high quality
JPEG. Okay, so
compressed Raw is a horror to some, as I'm only getting
9.5 bits of linear
data instead of 12. So for really tricky images I
switch to uncompressed if
needed.
3) The newest cameras have super-large embedded
previews in them anyway
(actually of higher overall quality than the full image
from my old D1) so
image browsing of them can be as fast or faster than
the JPEG equivalent if
you have software that can read them
4) Photoshop ACR has gotten good enough that I can
easily open most images
right into Photoshop quickly without having to suffer
through the Nikon
Capture portion of the workflow.
That said, I am still stunned by the quality of the out
of camera JPEGs on
my D2X. When I shoot Raw+JPEG it often requires minutes
of fiddling in ACR
(or firing up Capture or Bibble) to equal (let alone
surpass) the quality of
the JPEG. There are some interesting technical reasons
why that is more true
now than ever, but too long to meander through in an
email.--David Cardinal
___________________________________________________________________________
Date: Fri, 6 Jan 2006 16:58:39 EST
From: Dan Margulis
Subject: Re: Re: Readability and teaching
Ron Kelly writes,
As part of your procedure Dan you should definitely
attempt to answer
this question: if you know the limitations of Jpeg
post exposure, can
these be compensated for at the time of the exposure?
In other words,
can a skilled practioner with good equipment get the
same result
going jpeg or RAW? In all situations, or just some?
I'm not positive that I understand this correctly but I
think you are expanding the inquiry further than I can afford. I definitely
have opinions on how photographs should be exposed but my books are already
cumbersome enough without adding photographer-specific content. So, I've
always drawn a line at the point of capture. The picture has already been
taken for better or for worse, and we have what we have. Given an existing
file, then yes, we want to test whether a good Photoshop operator can get
the same result either way.
Now, *could* you shoot differently to make a more
easily correctable JPEG? I think so, in principle, but you would have to be
very, very careful. The danger of trying to make delicate maneuvers in
relatively gross environments like a camera, or Camera Raw, or LAB is that
it's easy to damage the picture, too, sometimes beyond your capability to
fix it.
Dan Margulis
___________________________________________________________________________
Date: Fri, 06 Jan 2006 17:06:52 -0500
From: "Iliah Borg"
Subject: Re: Re: Camera Raw
Why I would not send RAW files out is because different
raw converters extract different dynamic range, exhibit different false
colouraton of highlights, deal differently with banding, introduce
different demosaicing and colour artifacts.
A good file converted with a poor or inappropriate tool
can end up in the bin.
Same as a good RGB file converted using poor CM system,
bad profile, or just unskillfully - prints the way you do not want to name
it.
--
Best regards,
Iliah Borg
___________________________________________________________________________
Date: Fri, 06 Jan 2006 20:33:00 -0800
From: Marco Ugolini
Subject: Re: Readability and teaching
In a message dated 1/6/06 11:23 AM, David Cardinal
wrote:
Amen to that. I'm always amazed when I compare the
difference between the
speed of my camera processing images & how long
they take on my "state of
the art" computer!
Yes, but let's not forget that the difference between
the camera and you is that you are able to customize your choices and then
go back and change your mind about the results, whereas the camera gives
you one result, and one only, and the original RAW data go lost in the
process.
That difference must be worth your time on the
computer, in my opinion.
--------------
Marco Ugolini
Mill Valley, CA
___________________________________________________________________________
Date: Fri, 06 Jan 2006 20:27:13 -0800
From: Marco Ugolini
Subject: Professional standards and education [was:
Camera Raw]
In a message dated 1/6/06 11:19 AM, Henry wrote:
My concern is that this situation will continue to
grow unless a better effort at education takes foot.
This is how I see the trends in light of my years in
the field of imaging:
For a long time now a growing push has been occurring
towards lower prices (salaries included), tighter deadlines, decreased
professionalism, unrealistic expectations (at times even ridiculously so),
together with a general atmosphere that sacrifices concerns of quality to
the altar of pervasively prosaic ones (budgets and profit margins, mostly).
Incidentally, and increasingly so, many companies (my
former employer among them) end up viewing education as just another one of
the "expenses" to be cut to boost the bottom line.
To me, these factors all seem to conspire to make the
problem intractable by simple good will and individual dedication, or
desire to be educated. It just seems to me that a far larger dynamic is
afoot here, and sporadic isolated efforts will not suffice.
Not to be misunderstood, I myself am all for education
and professional standards: it's the way I have been striving to behave in
my professional life (with results to be judged by others). But I also
believe that if one wishes to turn around such a powerful push toward
mediocrity, one must also be clear-eyed enough to contribute to a
collective effort to turn it around, which to me is the only way not to end
up beat, cynical, alone, and sunk by it.
Best regards.
--------------
Marco Ugolini
Mill Valley, CA
___________________________________________________________________________
Date: Sat, 07 Jan 2006 16:13:43 -0000
From:Andre Dumas
Subject: Re: Camera Raw
Hello Iliah.
What you say seems logical but, when you send
transparencies to a magazine (like National Geographic), they can have them
scanned a hundred different ways to suit their taste and they are paying
good money for that privilege, why would it be different with digital files
? You may like your snow scenes to have a purplish overtone but maybe
the editor doesn't, isn't it better to let him choose what he knows is best
for his purpose ?
Andre Dumas
___________________________________________________________________________
Date: Sat, 07 Jan 2006 12:25:36 -0500
From: "Iliah Borg"
Subject: Re: Re: Camera Raw
Dear Andre,
Raw is not a developed transparency. Raw is
latent image.
Raw is not designed for a specific
"developer", like E-6 or K-14.
"scanned in a hundred different ways"? or
"carefully scanned and post-processed further"?
How submitting a high quality TIFF file makes
post-processing for snow tint more difficult? Attempts to colour-correct
before demosaicing, especially to apply local adjustments, are a good way
to get artifacts.
Nature of raw development of Bayer pattern has very
little to do with colour, contrast, brightness... Raw development is
interpolation, like resizing. Take it from somebody who developed a raw
conversion programme :)
--
Best regards,
Iliah Borg
___________________________________________________________________________
Date: Sat, 7 Jan 2006 14:37:19 EST
From: Dan Margulis
Subject: Re: Re: Readability and teaching
Mark Segal writes,
Since I acquired a Canon 1Ds in October of 2004 I have
been using it in
RAW+JPG mode, so I see both. I have made about 5000
photographs with it since I
bought it. I cannot think of a single frame worthy of
post-capture processing
for which I could not do a significantly better job
processing the RAW image in
Photoshop rather than using the in-camera JPG - and
that is from one of the
best professional instruments on the market.
This claim is so far in excess of anything I've ever
heard that I have to ask for more details as to what you're doing to these
files and why you consider that the same things couldn't be done to JPEGs.
AFAIK everyone accepts that the color-correction tools
within Camera Raw are crude compared with what exists in Photoshop proper.
Therefore, I think that even the most rabid advocates concede that
finetuning is best done in Photoshop. If the original JPEG is reasonably
good there's no claim that I'm aware of that preprocessing it in Camera Raw
would help the subsequent correction.
What I've always said is the likeliest correction use
for raw modules is in the case of images such as the type described by Jim
Bean, where the JPEG is of dubious quality. In that case, it might be
easier to move closer to the desired result in the raw module than to fix
the whole thing in Photoshop.
As I pointed out in another post, I've got a truckload
of Raw + JPEG from various cameras, various photographers. I've opened them
all and played with some of them. I've set aside quite a few for further
study. It's too early for any firm conclusions, but certainly I am not
seeing more than a quarter where I have even a suspicion that the raw file
might be useful.
Two of my sources sent 1Ds files, but only one sent
them in Raw + JPEG form. I see no indication that there would be any gain
at all in working on the raw files rather than the JPEGs, but it's a
limited sample, so I'm willing to leave open the possibility that there's
something 1Ds-specific that results in inferior JPEGs. If you are willing
to provide files for publication with an explanation of what you think can
be done with them that can't be done as well in JPEG, contact me offline.
Jim Bean: that goes for you, too. I've got lots of Raw
files but their quality is pretty good generally. If you have Raws that
were shot under adverse conditions that you think are instructive and are
willing to part with, contact me offline.
Dan Margulis
___________________________________________________________________________
Date: Sat, 7 Jan 2006 20:01:36 -0500
From: David Barr
Subject: Re: Re: Camera Raw
I was surprised to read on this list that some people
think it better to have RAW conversion done in camera. I have
always shot in camera RAW prefering to post process with Phase One.
The greatest benefit of this I've found is the ability to set color
temperature for each picture.
Could you give us the benefit of your considerable
experience on this issue.
David Barr
--
Photobar Agricultural Stock Photography.
Stock and assignment photography and
specializing in all aspects of agriculture.
___________________________________________________________________________
Date: Sat, 07 Jan 2006 20:17:58 -0500
From: "Iliah Borg"
Subject: Re: Re: Camera Raw
Dear David,
I was surprised to read on this list that some people
think it better to have RAW conversion done in camera.
Was I saying that? Raw converters are improving, very
substantial changes in demosaicing are continuing to be introduced. You can
expect RML and Aperture floating point support to be extended. There is a
long way until this can be introduced in cameras. And even then - how often
are we going to change firmware in the cameras? Camera with raw processor
is something like Polaroid pack. Separate development will always be
better.
Best regards,
Iliah Borg
___________________________________________________________________________
Date: Sat, 7 Jan 2006 20:38:19 -0500
From: David Barr
Subject: Re: Re: Camera Raw
No You were not saying that. Other people on the list
did feel that it was better to use the in camera conversion. I didn't
believe this and I thank you for your opinion that confirms what I already
thought, that it is better to use RAW conversion software after the shoot.
David Barr
--
Photobar Agricultural Stock Photography.
Stock and assignment photography and
specializing in all aspects of agriculture.
___________________________________________________________________________
Date: Sun, 8 Jan 2006 09:59:25 -0400
From: Paco Marquez
Subject: Re: Re: Camera Raw
One only has to see enlargements made from Jay Meisel's
jpeg files to understand that there is nothing wrong with the format and
that it is capable of wonderful clarity and saturation.
In my case though, necessity has shown me that since
most of what I do has to be reproduced in sizes ranging from the web to
sometimes 5 stories tall, the blockiness of jpeg structure is personally
objectionable. And even then, this is something which anyone will not see
unless it is pointed out. But If I see it, and it does not please me, then
it is just "my" thing and I don't want or care to have others
agree.
Paco Márquez
661 McKinley St.
MIramar
San Juan, PR 00907
787-721-8554
787-587-7384 Cel.
http://www.pacomarquez.com
___________________________________________________________________________
Date: Sun, 8 Jan 2006 14:22:31 -0500
From: David Barr
Subject: Re: Re: Camera Raw
Henry Davis writes:
You may have heard people say, "a scan is a scan
is a scan", or "a good
digital camera file can be used for lots of diverse
purposes". If they
are shot and prepared properly, there is great
flexibility to be had
from them. But it does take some effort, and
this is the part that is
being missed.
The problem as I see it Henry is too many people that
are under the impression that "a digital camera file is a digital
camera file and that they are all created equal."
When I supply a file I give the client a file based on
the size that they request. If they are printing at 3 inch by 4 inch
then that's what they get or if they aren't sure I ask what is the maximum
size they might use the picture and base the high res file on that size.
I was on assignment with an art director and during the
photo shoot, for a corporate brochure, someone gave the art director
a 3.5 inch floppy disk telling him there were some picture they had
taken on it that he could use. Note several pictures on a 1.4meg
floppy. Needless to say they were of no use.
David Barr
___________________________________________________________________________
Date: Mon, 9 Jan 2006 14:12:57 -0500
From: Henry Davis
Subject: Re: Camera Raw
Marco,
Thank you for your reply. That Dan, and other
members of this forum, have some influence in the print trade is the reason
that I believe that this is as good a place as any for resolving issues and
recommending efficient workflow with respect to Camera Raw. The
example I used illustrates some of the confusion that exists - and the
example is not even color related.
Your points are well made and I agree that the
"larger dynamic afoot" may be beyond our influence. It is
amusing from my perspective to observe the growth in numbers of
inexperienced print customers wanting/demanding the quality that they have
seen in projects that were accomplished by the best and most experienced.
Yet, if disappointed with the results of their own print project,
they often do not want to listen to any recommendations that would improve
the results - especially if it requires any effort on their part. The
larger dynamic may just be "human nature" but this would not have
been offered as an excuse even 20 years ago.
Some folks are earnestly eager to learn and their
efforts will set their work apart. Others, however, will continue to
fill pages with over-sized, ill prepared files. The collective effort
of this forum is a good place to begin to disseminate the best practices
for Camera Raw. The next step is one of getting this communicated to
the general public.
It would be great if Dan would make available a pdf on
this Camera Raw that would be suitable for printing companies to distribute
to print customers or maybe some links that might direct them to resources
on this topic. Still, it should be stressed that it is the one who
prepares the files that is responsible for the outcome.
Henry Davis
___________________________________________________________________________
Date: Mon, 09 Jan 2006 15:28:32 -0800
From: Marco Ugolini
Subject: Re: Camera Raw
Well put, Henry. I agree that this forum is a good
place to help build that
larger response that I mentioned in my message, and
that individuals have an
undeniable role to play within that broader effort.
Thank you.
--------------
Marco Ugolini
Mill Valley, CA
___________________________________________________________________________
Date: Mon, 09 Jan 2006 19:50:58 -0600
From: "jimbean"
Subject: Re: Camera Raw
pulled from marco's comments:
In a message dated 1/9/06 11:12 AM, Henry wrote:
It would be great if Dan would make available a pdf on
this Camera Raw
that would be suitable for printing companies to
distribute to print
customers or maybe some links that might direct them to
resources on
this topic. Still, it should be stressed that it is the
one who
prepares the files that is responsible for the outcome.
the one who prepares the files that is responsible for
the outcome.
that is easy to say... however I am currently launching
a handful of files (for three separate polical campains-not a typo) to a
real cross section of printers.. three newspapers, the good, the bad, the
worst.. conventional cmyk to an area printer that refuses any attempt to
answer questions about their process/techniques-thank goodness their
printing is better than their proofing, another handful of billboard images
printed in cmyk(inkjet),and an out of state direct mail company that when
you ask them a question ..both the graphics team at the direct mail place
and the head guy at the billboard printer each stated: ink limits/etc
doesn't matter.. we run everything through a rip and that takes care of
it... and the reality that much of tomorrow's work will be short runs
printed (RGB?) on an ever evolving 'digital press'.. toner?, ink,
inkjet ink, melted crayons (how many products are already crowding the
market).. and the really crazy part is that many of the customers/consumers
accept extremely poor work as not only acceptable..but they are actually
proud of their project... it is going to take more than a grass roots
effort from everyone on this list to make even the slightest dent in the
'progress' demonstrated by today's output devices... certainly it is a near
miracle that we have the current capapiblities and certainly the highend
services demand qualified and capable associates working towards
perfection... but on this list, photographer's lists, inkjet printer
lists.. people continue to split hairs over unrealistic gamut expectations
that may or may not even be detectable (or relevant) by the viewer ..
including lengthy discussions of colors that likely occur only on a
specialty color target... it would be great if dan were to distribute
a CR pdf for use by print customers but would that actually accomplish
anything ... jim bean
also, was everyone/anyone planning on paying dan for
the pdf? jb
___________________________________________________________________________
Date: Tue, 10 Jan 2006 10:24:47 -0400
From: Lee Clawson
Subject: Re: Camera Raw
on 1/9/06 9:50 PM, jimbean wrote:
Jim, Henry, Marco and others on the topic,
My clients don't want to hear of any of this stuff.
They want to take pictures like they did with film have them developed /
printed and get back consistent pleasing results. They essentially want the
same when these photos appear in 4 color printing.
They didn't care to hear any of the technical stuff
when we did scanning and don't care to hear it now with digital photos. In
fact the knowledgeable ones will ask why are there so many formats, as in,
more than 100 native camera RAW file formats, as well as DNG (Digital
Negative), JPEG and TIFF.
I can't answer this either. All the RAW formats and
processors beleaguer me too. If anything I'd want to simplify all this
before trying to go out and explain all this to our clients and public.
Lee Clawson
2/\V/\7 Studio
___________________________________________________________________________
Date: Tue, 10 Jan 2006 09:48:04 -0600
From: "jimbean"
Subject: Re: Camera Raw
lee wrote
My clients don't want to hear of any of this stuff
amen to that.. you are correct, even when things
go down the tube.. the clients/customers/consumers didn't really have a
high expectation (or an educated eye) in the first place..(although we each
acknowledge our responsibility to do what we believe is best?) some
doctors tape you up and only a slight scar remains.. other times after
great effort and advanced stitching techniques.. a somewhat larger, more
obvious scar is apparent.. but to the patient.. its all the same
'quality'... enjoy the day, jim bean
___________________________________________________________________________
Date: Tue, 10 Jan 2006 12:08:30 -0500
From: Henry Davis
Subject: Re: Camera Raw
On Jan 10, 2006, at 10:48 AM, jimbean wrote:
the clients/customers/consumers didn't really have a
high expectation (or an
educated eye) in the first place..
Some people get all of the easy clients!
Henry Davis
___________________________________________________________________________
Date: Wed, 11 Jan 2006 13:20:20 -0500
From: Henry Davis
Subject: Re: Re: Camera Raw
On Jan 7, 2006, at 11:13 AM, colorman042000 wrote:
What you say seems logical but, when you send
transparencies to a
magazine (like National Geographic), they can
have them scanned a
hundred different ways to suit their taste and
they are paying good
money for that privilege, why would it be
different with digital
files ?Ê You may like your snow scenes to have a
purplish overtone
but maybe the editor doesn't, isn't it better to
let him choose what
he knows is best for his purpose ?
Andre,
There may be some photographers who may not want nor
appreciate a photo credit when the decisions of an art director publish an
image that doesn't represent the photographers intentions.
Camera Raw files can be processed in oodles of ways
that misinterpret the photographers intentions.
Camera Raw is very nifty format, but it opens a whole
new can of worms.
Henry Davis
___________________________________________________________________________
Date: Wed, 11 Jan 2006 14:11:52 EST
From: Dan Margulis
Subject: Re: Camera Raw
Henry writes,
It would be great if Dan would make available a pdf on
this Camera Raw
that would be suitable for printing companies to
distribute to print
customers or maybe some links that might direct them
to resources on
this topic. Still, it should be stressed that it
is the one who
prepares the files that is responsible for the
outcome.
I probably will make something available late in the
year once the next book is finished. I think I will have some good
recommendations but there is a lot of testing ahead. It would not be
responsible for me to come up with such a document now.
Dan Margulis
___________________________________________________________________________
Date: Wed, 11 Jan 2006 21:00:14 -0000
From: Andre Dumas
Subject: Re: Camera Raw
---Henry wrote:
There may be some photographers who may not want nor
appreciate a
photo credit when the decisions of an art director
publish an image
that doesn't represent the photographers intentions.
I agree. I have also seen many photographers'
transparencies that were not printed "as is", the printed version
improved upon the original and I'm sure the photographer must have been
grateful that it did. In our case, most photographers send their
transparencies "as is" and our magazine has to take it from
there, this gives us and the photographers a lot of flexibility.
Camera Raw files can be processed in oodles of ways
that
misinterpret the photographers intentions. Camera Raw
is very nifty
format, but it opens a whole new can of worms.
Very true Henry, no photographer wants to see his
work come out badly in print but nor does our magazine so the photographer
knows that our art department will get the best output possible from his
transparencies. Another advantage to this workflow: when a story
includes work from two (or more) photographers we can white balance all
images for a uniform appearance.
We are a farm magazine so these methods suit us well
but I can imagine that our way of doing things would not be acceptable in
many other fields of photography.
Andre Dumas
___________________________________________________________________________
Date: Wed, 11 Jan 2006 17:04:51 -0500
From: Henry Davis
Subject: Re: Re: Camera Raw
I appreciate what you are saying, Andre. You are
right that no one in the process would want a picture to come out badly,
but photographers could be justifiably upset if their intentions were
overruled in favor of some other, say, "more artistic" approach.
In workflows where Camera Raw files are being
delivered, Adobe Camera Raw is only one tool that might be used to begin
the process of making a print ready version. With this one tool,
there is already a growing misunderstanding of aspects that don't even
concern color. Like I said, the Camera Raw format presents some
really nifty ideas. But, so do race cars,
speedboats, nail guns, chain saws, etc.
Henry Davis
___________________________________________________________________________
Date: Wed, 11 Jan 2006 17:25:16 -0500
From: Henry Davis
Subject: Re: Camera Raw
Thanks, Dan. Even this late into the game, Camera
Raw seems to be presenting some users with mysteries that are becoming
myth.
Henry Davis