Re: Setting default RGB in OS X 10.4?
Re: Setting default RGB in OS X 10.4?
- Subject: Re: Setting default RGB in OS X 10.4?
- From: Robin Myers <email@hidden>
- Date: Fri, 6 May 2005 14:53:08 -0700
On 6 May, 2005, at 13:17, Chris Murphy wrote:
On May 6, 2005, at 11:45 AM, Bob Frost wrote:
Andrew,
No need to! Apple achieved that a long time ago with AppleRGB
(according to Bruce Lindbloom's data on color spaces).
Actually they achieved an overall smaller gamut space with both Apple
RGB and Generic RGB, as compared to sRGB.
OK, I guess it is time to explain a little about Apple RGB here. The
original Apple RGB values were created from my measurements of about 10
Apple 13" monitors around 1989. The averages, excluding totally wacky
monitors like one that had a 17000 K whitepoint, were used in the first
ColorSync for the default RGB profile. These values correlated well
with values eventually supplied by the Monitor group of the Peripherals
Division (for those that did not know this, in the Paleolithic Age
Apple made printers, scanners, and monitors). I believe the final
version profile was made with the Monitor Group values. The white point
for the monitors was 9300 K, not the 6500 K or 5000 K common today. At
the time, 9300 K was the only way the monitors could be obtained from
the vendor.
This was in the pre-sRGB days, so Apple RGB was used as a generic RGB
profile. It made sense at the time since much of the color content was
artificially generated in FreeHand or Illustrator, thus it was created
in Apple RGB. Adobe eventually put Apple RGB into Photoshop as a
working space and it thus it has been passed on to today's users.
Now that it is the Modern Age, it would be a good idea to drop Apple
RGB from system. It outlived its usefulness. Comparing it to sRGB or
any of the current LCD or CRT monitors is like comparing a Conostoga
wagon to a current automobile.
Robin Myers
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