Digital BW, The Print

Austin Franklin wrote:

> > Then I recently read a post from Dan Margulis in another
> > group I participate,who says it really makes very little
> > difference,if any.
>
> Dan is specifically talking about color, for which he is right.  That is
> easily explainable too.  Color is 3 x 8 or 24 bits/pixel, where B&W is 8
> bits/pixel.  His comment is absolutely NOT true for B&W.
>
>
Not only that, but even in COLOR if you need to correct an imperfectly  
scanned original or a scan from an original where the tonal values are 
extended, 16 bits is the way to go UNTIL you have done the work on the 
curves/histogram.

The reason is simply that you may end up with images with multiple 
values squeezed to overlap in a 8 bit image, while in a 16 bit they 
could be mapped to differing values.  Once you correct the spread of the 
histogram/curves in 16 bit, you can now more easily map them to 
differing values in 8 bit..  That helps prevent banding..

[Keith]
 
 

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