RE: [APML] More basic processing ?'s

["Chris Schur" <cschur@cybertrails.com>]

Alan, the industry uses the sum of the individual channels for quantifying
color depth.  for example, 8 bits per channel is R+G+B = 8+8+8= 24 bit
color.  Similarliy 12 bits per channel is called 36 bit color.

Chris Schur

Astrophotography: http://www.psiaz.com/schur/astro/index.html


-----Original Message-----
From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On
Behalf Of Alan Voetsch
Sent: Tuesday, April 16, 2002 6:25 PM
To: astro-photo@seds.org
Subject: RE: [APML] More basic processing ?'s



> 8 bits per channel is OK, with two exceptions, first
> If you scanning an
> image, try for the scanners max of 12 bits per
> channel, the more data you
> have to work with, the better the dynamic range of
> the image.  This is
> refered to as 36 bit color.

Hey again Chris,

Meant to ask about this but forgot. Can you explain
how 36 bits comes from 8 bits and 12 bits?

Alan

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