RE: gamma 1.0 and loss of detail
RE: gamma 1.0 and loss of detail
- Subject: RE: gamma 1.0 and loss of detail
- From: "CS Carl Stawicki (4211)" <email@hidden>
- Date: Tue, 19 Feb 2002 10:08:57 -0500
I went through this !@#$ Gamma 1.0 crud myself. A simple experiment to do is
this:
1. Create an 8-bit RGB neutral blend from 0-0-0 to 255-255-255.
2. Duplicate it and assign each an RGB space with different gammas, 1.0 and
2.2
3. If you read the 'L' values down in the shadows, from 1.0 you get:
0 rgb = 0L
1 rgb = 4L
2 rgb = 7L
3 rgb = 10L
etc...(In other words, there're a lot of holes in the shadows.)
4. Convert each RGB file to LAB and check out the 'L' histograms. 'nuf said.
Carl
>
"I looked at them briefly indeed. Is Timo a kind of persona non
>
grata in
>
> "color space"?"
>
>
>
Gvido,
>
>
Timo is a radical isotope in an otherwise stable atmosphere.
>
>
I've had the "pleasure" of being caught in an email debate with him once,
>
and the amount of misinformation in his possession is incredible. And the
>
sad part is that you can quote him chapter and line from any of the
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generally accepted texts and papers on digital color management/profiling
>
and he will continue to disbelieve you.
>
>
I consider him the "Jerry Falwell" in our religion of color.
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>
Scott Olswold
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Senior Systems Support Engineer
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MCSE, CNA 5, A+, Adobe Expert User (Photoshop and PageMaker)
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Danka Office Imaging
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[demime 0.98b removed an attachment of type application/ms-tnef]
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