Path: utzoo!attcan!uunet!sco!brianm
From: brianm@sco.COM (Brian Moffet)
Newsgroups: comp.sys.amiga
Subject: Re: Next Amiga system
Keywords: Mach Effect
Message-ID: <1438@scolex>
Date: 6 Oct 88 16:22:06 GMT
References: <8810040733.AA03222@cory.Berkeley.EDU>
Reply-To: brianm@sco.COM (Brian Moffet)
Organization: The Santa Cruz Operation, Inc.
Lines: 28

In article dillon@CORY.BERKELEY.EDU (Matt Dillon) writes:
> Peter da Silva  peter@sugar.uu.net Writes:
>>
>>It may be a competitive minimum, but is it a real requirement after all? Can
>>people really distinguish 256 levels of red, green, and blue?
>
>	Don't you mean, "can people really distinguish 64 levels of" ??
>If, presumably, you are arguing for 6 bits/gun rather than 8 bits/gun as being
>reasonable.  The answer is yes, you can, to both 64 and 256 levels. 

Matt is correct. I wrote a small article in comp.graphics (I think)
which sort of describes the Mach Effect.   This is the human
eyes ability to distinguish 2 different colors when they are
next to each other even though the human would not be able
to tell the difference if they were apart from each other.

I found that in order to get *good* shading on a math project I was 
doing I needed 512 shades of color. The object was all the same color
(cyan) with specular and diffuse reflection (with shadows of course).
These pictures did not use dithering, and thus the port to my
amiga looks pretty bad. (only 16 shades).

brian
-- 
Brian Moffet			{uunet,decvax!microsoft,ucscc}!sco!brianm
 -or-				...sco!alar!brian
"Evil Geniuses for a better tomoorow!"  My fish and company have policies.
					I have opinions.