Re: use of sRGB as a default
Re: use of sRGB as a default
- Subject: Re: use of sRGB as a default
- From: John Zimmerer <email@hidden>
- Date: Sun, 20 Jun 2004 12:57:09 -0700
Bruce,
Let me know which apps, and I'll file the bugs. Remember, 10.3.4 for
proper behavior in Preview.
Let's be honest: The choice of color space to use for untagged data is
arbitrary. There is never a right answer, there's just the prevailing
practice. There is no such thing as an sRGB device. Some may have sRGB
modes, where they try to simulate sRGB, but we're still left with
device-dependent color.
If I were to speculate how much web content was intentionally in sRGB,
I'd be willing to bet that only 10% or less of web content has
intentionally been converted to sRGB. Most is simply untaggged, so
we'll never know for sure.
Still the broader point is without a profile, no one will ever know for
sure which color space the content creator had in mind. Tag all data,
and the point is moot.
Now, as to the question of Safari, I'll grant that the reining
standards body does have clear recommendations here with respect to
untagged data. I won't argue the merit of their recommendation, since
the audience is obviously pro sRGB here. So if the group feels so
strongly that we should treat all untagged data as sRGB, then I'll pass
that along to the Safari product manager.
JZ
On Jun 20, 2004, at 11:46 AM, bruce fraser wrote:
At 12:41 AM -0700 6/20/04, John Zimmerer wrote:
Bruce,
Generic RGB Profile.icc is the default profile for untagged RGB
images on Panther. Its primaries allow for blue skies and red apples.
By using this as the default, all untagged color will be consistent
across all Panther machines.
Two problems with that.
1.) I've yet to find an application that actually uses Generic RGB
rather than usermonitorRGB for untagged images.
2.) Even if apps behaved as expected, unless the image was created on
a Panther machine, you've simply guaranteed that the image will look
consistently wrong on all Panther machines.
I've been as vocal about the shortcomings of sRGB as anyone else on
the planet, but
a) it's based on real device behavior
b) it's perfectly possible to represent both blue skies and red apples
in sRGB
c) if I were to speculate as to how much web content is sRGB vs how
much web content is originated as untagged RGB on Panther machines,
the former number would be very much larger than the latter one.
I still fail to see how this behavior, even if it worked, would be
useful.
Bruce
--
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