Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Glenn 
Mitchell" <gmitchel850@y...> wrote:

> 
> Until you start editing the image, the histogram for an 8-bit, 12-
> bit, or 16-bit scan are likely to look similar.

One reason for this is that Photoshop's histogram display 
provides inadequate resolution to see many of the contunuity 
gaps. There's a free plug-in available to use with Photoshop that 
allows you to view histgrams at increased resolution (4 or 5 
times more than the 256 levels of PS's built-in histogram 
function):
http://www.reindeergraphics.com/free.shtml#widehisto

This plug-in also shows the histogram for saturation, hue and 
luminance mode, as well as RGB .

Phil