RE: Re Gamma, dithering and device calibration
RE: Re Gamma, dithering and device calibration
- Subject: RE: Re Gamma, dithering and device calibration
- From: "michael shaffer" <email@hidden>
- Date: Sat, 3 Aug 2002 17:50:49 -0230
Bruce writes ...
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...
>
>
If your display is truly set to gamma 2.2, then the brightness of the
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"squinty" dithered pattern should look the same as a solid patch of pixel
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value 186. (In gamma 2.2, a pixel value of 186 has half as much
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*energy* as a pixel value of 255.)
It would therefore be interesting if someone responded with the answer as
to why then does resampling such a pattern yield the numeric average (128)
rather than the value predicted by the gamma space (186)??? (PS v.6.02)
cheerios ... shAf :o)
Avalon Peninsula, Newfoundland
www.micro-investigations.com
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