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- Newsgroups: comp.os.ms-windows.misc
- Path: sparky!uunet!think.com!ames!elroy.jpl.nasa.gov!insctrl.jpl.nasa.gov!RFowler
- From: RFowler@kelvin.jpl.nasa.gov (Robert A. Fowler)
- Subject: Re: 24-bit Color
- Message-ID: <RFowler.392@kelvin.jpl.nasa.gov>
- Sender: news@elroy.jpl.nasa.gov (Usenet)
- Nntp-Posting-Host: insctrl.jpl.nasa.gov
- Organization: Jet Propulsion Laboratory
- References: <1dl27qINNo03@usenet.INS.CWRU.Edu> <BxGv02.E29@cs.uiuc.edu>
- Date: Wed, 11 Nov 1992 00:33:57 GMT
- Lines: 26
-
- In article <BxGv02.E29@cs.uiuc.edu> stangel@cs.uiuc.edu (Mike Stangel) writes:
-
- >There's something else I don't understand. Why 24-bit color?
- >24 is not a power of 2, and from what I've heard the human eye
- >can only distinguish something like 87,000 different colors.
- >Seventeen bits would accomplish this, and 16 comes close enough
- >that you'd probably not know the difference. Anyone?
-
- >Mike
-
- 24 is 3x8bits. 1 byte each for Red, Green, & Blue ramdacs. While unable
- to say why, people can routinely tell that 24bit images are "better" than
- 15bit (32k colors) ones.
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