Re: Panther, sRGB, web browsers
Re: Panther, sRGB, web browsers
- Subject: Re: Panther, sRGB, web browsers
- From: Roger Breton <email@hidden>
- Date: Sat, 13 Dec 2003 22:37:06 -0500
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What I mean is simply this:
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If I calibrate an input device, let's say my scanner, none of my other
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equipment (monitor, printer, ...) plays any role. The calibration
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software just compares what the scanner delivers from the IT-8 target
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and compares it to what it "should" be numerically. So it takes care
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that scanning my images creates "neutral" representations on my
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computer.
I agree your scanner "compares" what the electronics delivers from the IT8
to what it "should" be, the Lab values recorded on the accompanying disk.
Does this process necessarily results in creating "neutral" representations
on your computer? If the starting values are neutral then yes but my limited
experience with scanners is that IT8 targets are not neutral in the first
place. I agree the software is trying to reconcile the scanner response with
the known values of the IT8. But I long believe that the GrayScale patches
at the bottom of the IT8 were neutral when in fact they were not.
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That doesn't mean I *see* them correctly on my display, though, since
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this has its own kind of deviations that the display profile is
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supposed to take care of. But the display profile does *not* correct
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the raw data of the scanner, but builds on the "neutral" state the
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scanner profile creates. So there's two paths involved "to go from one
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metric to another", A > B > C. The same is true for my printer with
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it's own profile.
I guess you can say that the display profile builds on the "neutral" state
the scanner profile creates. We are probably saying the same things although
with different words. I just have difficulty conceptually with the idea that
something becomes "neutral" in the conversion from A to B to C. You're
saying it is neutral whereas I am thinking that whathever color is merely
transported from one system to the other with the best correspondance. If
its not neutral in the first place then it stays that way. But if it is
neutral in the beginning then, hopefully, it will stay neutral all the way.
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I want correct
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colors not only from Photoshop, I also want them from all the other
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apps I have.
Amen to that.
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Photoshop still does it in this archaic way where
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applications tried to do system-level things because operating systems
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weren't evolved enough. Those times should be hopefully gone now.
ColorSync services are there for applications to take advantage of. Maybe
you're advocating for more 'intelligence' at the system level: would you
want to strip Photoshop of more color conversions options?
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I can see the need in Photoshop in case you use it for very specific
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work flows that are not the default on your computer. But for a web
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browser IMHO this would be overkill.
I don't see why it would be such a bad thing to have it in a browser as in
an advanced color application like Photoshop? But I may be alone in this
opinion. I compare it to learning a foreign language: tell me what the main
verbs are, what are the rules of conjugation are and I'll manage to
construct my sentence myself to remain in charge of the meaning I want to
convey.
>
Uli
Regards,
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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