I think Reichmann's point was that even though grain is about half
the size of pixel sites it is either black or white. He said you need
a little group of grains to make gray and that clump is bigger than a
pixel which can be several thousand shades of gray in its discrete
little self. I think he was trying to show why comparisons that use
black and white resolution charts give an advantage to film that is
not reflected in real world photography. Thought provoking stuff.
Winsor
Long Beach, California, USA
On Mar 13, 2006, at 8:46 AM, Walt Wayman wrote:
>
> My point: looks like a lot of shades of gray to me. And having
> used a grain magnifier to focus in the darkroom on many an
> occasion, I don't recall it looking much different. If you look
> close enough and get down to the micron level, maybe it really is
> all black and white, but from a practical standpoint, as in making
> photographs, don't black and white make shades of gray?
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
|