Re: Best Color Management Practices for Web Image Creation
Re: Best Color Management Practices for Web Image Creation
- Subject: Re: Best Color Management Practices for Web Image Creation
- From: Chris Murphy <email@hidden>
- Date: Tue, 15 Jul 2008 00:55:05 -0400
On Jul 14, 2008, at 9:44 PM, Harmon, Jeff wrote:
I submitted the request for Firefox 3 to permit turning on color
management
in the preferences UI, rather than in a config text file. Was this
done?
Can anyone else please request this, if not?
So far I've expressed opposition to a UI option for color management.
In my view, the connotation of a UI option translates into "color
management is optional." In this case I think it will terribly confuse
users to have this option, and it will prolong the inevitable
transition.
If there is a way to explode inconsistency of color on the web, having
some users using a web browser with color management off, and others
with it on, with an option as to which camp they're in, would be a
pretty good way to do that. And as people get web browsers and leave
them on their machines often for a year or more at a time, I think an
option is incongruent with a timely transition to full color managed
web browsers.
On the flip side of this, having it on by default by FF 3.1, which is
currently planned but I don't know when that version would ship, might
be a problem due to bad EDID data from displays being used to build
display profiles on the fly. This is how Mac OS X has worked for a
very long time to the point where it's assumed most everyone has such
a profile in use now. That is the profile FireFox will be using,
except for the rathe small percent of the market using a custom
display profile. (This is a web browser, and a consumer market, not at
all the same thing as a Photoshop market).
Just as an FYI how big of a difference, here's one example (perhaps a
pretty bad example) for a MacBook Pro (LED) revision 4,1. Using DeltaE
2000, where DeltaC = difference in chroma, and DeltaH = difference in
hue. This is JUST for the blue primary, the red primary and green
primary aren't as dramatically affected but aren't all that close to
sRGB's primaries either.
EDID vs sRGB
DeltaC 21
DeltaH 13
DeltaE 8
EyeOne Pro vs sRGB
DeltaC 43
DeltaH 37
DeltaE 23
Either way, there is a rather large deviation in the blue primary for
this MacBook Pro compared to sRGB's blue primary. And based on the
EyeOne Pro's measurements, Apple's reporting of the primary via EDID
is even farther off, which is pretty pathetic if true. If Apple can't
compel their vendors to get it right, what about other vendors?
So I think we need more data before the switch is thrown, in any
event. If it's working well enough with existing display's EDID
reported data, then I say turn it on by default, without an obvious
option for turning it off.
Chris Murphy
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