1.8 gammavs 2.2
1.8 gammavs 2.2
- Subject: 1.8 gammavs 2.2
- From: neil snape <email@hidden>
- Date: Tue, 17 Jul 2001 22:01:25 +0200
on 17/07/01 21:10, Rick Gordon at email@hidden wrote:
>
Gruce Fraser (Bruce)
>
it is best to conform to a monitor gamma of 1.8 on the Mac and 2.2 on PCs in
>
order to lose the smallest number of levels in the video card (see p. 140 of
>
Real World Photoshop 6).
It's got to do with the system display methods. Macintosh started out with a
1.8 display gamma. According to David Blatner no one has monitors for a sole
user than Bruce so to his testing 1.8 works best for Mac. From others visual
opinions 2.2 or better yet 2.34 according to William Hollingsworth is best,
your mileage will vary.
>
Do modern video cards use a different native gamma setting based on the
>
platform they have been designed for?
Before any intervention there isn't a VLUT to adjust the gamma. When you
calibrate you push the levels that indeed modify the gamma. Most monitor
profilers now include a VCGT which I think means VideoCardGammaTag that
installs (loads) the VLUT in the video card after Colorsync version 2.5.
Neil Snape email@hidden
http://mapage.noos.fr/nsnape
Neil Snape email@hidden
http://mapage.noos.fr/nsnape