Re: Panther, sRGB, web browsers
Re: Panther, sRGB, web browsers
- Subject: Re: Panther, sRGB, web browsers
- From: Chris Murphy <email@hidden>
- Date: Mon, 15 Dec 2003 15:42:07 -0700
On Dec 15, 2003, at 12:46 PM, Uli Zappe wrote:
Please excuse my slow-wittedness at this point, but once the display
is "well behaved" thanks to "calibration", for what else do individual
applications (or whatever) possibly need an additional ColorSync
"characterization" display profile?
Calibration only does three things - basically. Sets the white point,
tone response (gamma), and black point. It's a hardware adjustment. It
doesn't tell anything to ColorSync about the actual behavior of the
device. Characterization describes the primaries (red, green and blue
are not standardized, they are different depending on the manufacturer
and even each batch has variation), the actual white point and tone
response achieved so the CMS can compensate.
One would assume that "well behaved" means "standardized" in some
way, so individual apps could simply assume that the display they send
their output to conforms to these standards, and that that would be
all there is about color management of displays.
Well behaved does not mean standardized. There isn't really such a
thing as standard monitor behavior. There is average monitor behavior
(that's where sRGB came from) but it's just not possible to force all
displays to be the same. Calibration is just about consistency -
otherwise it's very rudimentary. It's a prerequisite to
characterization, but it is not characterization itself.
Or is it something like: even "well behaved" displays differ from each
other in their abilities (color range etc.), and the ColorSync profile
informs apps that want to know about these capabilities (for whatever
reason)?
That is correct.
Of course you can't do that from afar (and you've already helped a lot
- thanks!!).
PostScript files do get quite large, yes.
I've emailed HP support with this question. If and when I receive an
insightful answer, I will keep you informed.
Yeah I'd like an update on this.
Chris Murphy
Color Remedies (TM)
www.colorremedies.com/realworldcolor
---------------------------------------------------------
Co-author "Real World Color Management"
Published by PeachPit Press (ISBN 0-201-77340-6)
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| References: | |
| | >Re: Panther, sRGB, web browsers (From: Roger Breton <email@hidden>) |
| | >Re: Panther, sRGB, web browsers (From: Uli Zappe <email@hidden>) |
| | >Re: Panther, sRGB, web browsers (From: Chris Murphy <email@hidden>) |
| | >Re: Panther, sRGB, web browsers (From: Uli Zappe <email@hidden>) |
| | >Re: Panther, sRGB, web browsers (From: Chris Murphy <email@hidden>) |
| | >Re: Panther, sRGB, web browsers (From: Uli Zappe <email@hidden>) |
| | >Re: Panther, sRGB, web browsers (From: Chris Murphy <email@hidden>) |
| | >Re: Panther, sRGB, web browsers (From: Uli Zappe <email@hidden>) |