On Apr 27, 2006, at 10:37 AM, Yves Gauvreau wrote:
> Katharine & all,
>
> just a thought on making back exposure gum prints maybe the  
> negative as to
> be fitted with a curve since you have no other control now (multi- 
> exposure,
> long exp, short exp, pigment load, etc). Maybe this would make a  
> world of
> difference...
>
I doubt it; first of all, your premise isn't correct. Of course we  
have the usual controls of pigment load, exposure, dichromate  
concentration; that's what this whole discussion is about, to try to  
determine what might the optimum levels of those variables be in  
combination with each other to produce the kind of tonal scale we're  
trying to achieve with the back-exposure.  .  As I've demonstrated,  
too much pigment can result in a sooty, grainy, contrasty image even  
when you print from the back.  And so forth.
Katharine
Received on Thu Apr 27 12:14:17 2006
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