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From: logajan@ns.network.com (John Logajan)
Subject: Re: Graphics on the STE - v. generally speaking...
Message-ID: <1991Apr4.061221.10114@ns.network.com>
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Organization: Network Systems Corporation
References: <1991Apr3.055519.2322@ns.network.com> <1991Apr3.055821.2405@ns.network.com> <40852@cup.portal.com>
Date: Thu, 4 Apr 91 06:12:21 GMT

In article <40852@cup.portal.com> Bob_BobR_Retelle@cup.portal.com writes:
>Spectrum 512, while allowing up to 512 colors on the screen,

The Spectrum 512 color claim is exceedingly misleading, by the way.
Each scan line is broken up into three parts, and each section can
use only 16 colors.  Or 48 color changes across the screen.  A true
random 256 color machine can have 256 different colors across one line.

A further problem is intensity quantumization.   Suppose I have a color
with R=5, G=5 and B=1.  If I take it down one level, I have R=4, G=4 and
B=0!!!!  I can't get a lighter shade of the same color!!

-- 
- John Logajan @ Network Systems; 7600 Boone Ave; Brooklyn Park, MN 55428
- logajan@ns.network.com, 612-424-4888, Fax 612-424-2853