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This is Interesting: Free Magazines for Graphics designers and webmasters
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Re: Saved images have different color than when in PS |
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  12-22-05 - 11:14 AM
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"Jon Danniken" <jonREMOVETHISdanniken@yahoo.com> wrote in message
...
> Thanks, Mike, but the problem occurs when I *do* use the 2.2 gamma (or any
> other "user specifiec" gamma setting through Adobe Gamma)..
Here's another possibility: you may have your RGB working space's gamma set
to something other than 2.2. Type ctrl-shift-K and look at your RGB Working
space. Set it to sRGB for the time being.
> Only when I gointo system32/spool/color/ and delete the *.icc I created
> does this problem go away.
I haven't tried this, but I would expect Photoshop would behave as if it
were a non color-aware app.
> I like the idea of setting up my monitor to a calibrated space, but why
> when
> I do this is my output different than what I am working on? In other
> words,
> why would I want to work on something in PS only to have the levels flip
> all over the place when it is output?
You have the logic backwards. The levels are being changed systematically
so that the appearance is the same, if (and only if) you have an accurate
monitor profile. Before Photoshop knew about working color spaces, the same
image would look lighter on the Mac than on the PC. Now that Photoshop is
color aware, the image can be converted from the working space to the
display space, resulting in the same image appearance on the PC and the Mac.
This works, but programs other than Photoshop have failed to follow suit,
for a variety of good reasons. The result is that many images look
different in Photoshop than they do in non color managed applications. This
is only a problem if your images are destined for the web, or if you are
going to share your RGB images with others and there is a chance they may
use them outside of Photoshop.
--
Mike Russell
www.curvemeister.com
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Re: Saved images have different color than when in PS |
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  12-23-05 - 08:14 AM
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From: "Jon Danniken" <jonREMOVETHISdanniken@yahoo.com>
[re image being darker outside of Photoshop]
> Thanks Mike; it is set to sRGB IEC 61966-2.1, but I still have the issue
> of
> the image looking different when I go to save it.
>
> I realize I am missing out on a crucial (and likely very simple) concept
> here, and I apologize for my stupidity.
You're obviously not stupid. At some point in the future, not many years
away, color management will be dirt simple. Right now it's not, and there
is a large amount of frustration out there. In fact, it's a real mess, and
there are about 32 different ways to set it up incorrectly - you have simply
found one of them.
> Regardless of how my monitor is set up, I do not understand *why*
> Photoshop
> changes the appearance of an image *while still in Photoshop*, when it is
> viewed
> in the saving window.
Photoshop is designed to display the image in a consisistent way on all
monitors. To accomplish this, you must have a correct monitor profile, and
the colors must be altered sightly to compensate for your monitor.
> I do not understand why it is that Photoshop wants to change the levels of
> an image when it is saved, and why it doesn't save it looking the same
> way that
> I see it while I am working on it.
You can use Photoshop this way if you disable color management. Select
"Color Management Off" in the Color Settings dialog. There is nothing wrong
with this, except that you will be swimming hard against the tide of
convention. Up to, but not including version 5.0 this was how everyone used
Photoshop. Although you can do high quality work this way, you may run into
problems when you share your images with others. Much excellent work was
done before color management - a large fraction of all digital publishing,
and no one complained.
> Hopefully it will make sense at some point, but right now it just isn't.
OK - here's another thing to try. You may have saved on top of your sRGB
profile, when you used Adobe Gamma to save your screen profile. Download a
fresh copy from Adobe,
http://www.adobe.com/support/downlo....jsp?ftpID=3148
Then install it in the color folder, and see if things start behaving
themselves.
On my system the color folder is C:\WINDOWS\system32\spool\drivers\color,
YMMV.
Mike Russell
www.curvemeister.com
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Re: Saved images have different color than when in PS |
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  12-23-05 - 11:14 PM
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Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
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Date: Fri, 23 Dec 2005 13:57:50 GMT
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X-Complaints-To: abuse@worldnet.att.net
X-Trace: bgtnsc05-news.ops.worldnet.att.net 1135346270 12.76.192.231 (Fri, 2
3 Dec 2005 13:57:50 GMT)
NNTP-Posting-Date: Fri, 23 Dec 2005 13:57:50 GMT
Organization: AT&T Worldnet
Xref: number1.nntp.dca.giganews.com comp.graphics.apps.photoshop:305021
Mike Russell wrote:
>
> From: "Jon Danniken" <jonREMOVETHISdanniken@yahoo.com>
> [re image being darker outside of Photoshop]
>
>
> You're obviously not stupid. At some point in the future, not many years
> away, color management will be dirt simple. Right now it's not, and there
> is a large amount of frustration out there. In fact, it's a real mess, an
d
> there are about 32 different ways to set it up incorrectly - you have simp
ly
> found one of them.
You are overly optimistic. If (not when) color management should become
"dirt simple" (and dirt cheap), many of us would either have gone broke
(from all $$$$$ we wasted on it), or have been locked up in a mental
institution (from the frustration of trying).
Here's my take. There are technical challenges to get color management
right, simple and cheap. And many digital imagers do not need it to
begin with. But Adobe and many vendors not only DELIBERATELY turn color
management into a nightmare, but also try to convince every user that
they need it. Why? To keep revising their products to make ONLY
incremental changes to bait the users. It is their business model to get
the users to keep "upgrading" the sw and hw, and keep wasting consumable
in making test prints.
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