Steve Shapiro (sgshiya@redshift.com)
Tue, 12 Jan 1999 18:38:56 -0800
Subject: Re: Continuous Tone? (was Re: Pt/Pd vs Gum???)
>
>
>"S. Carl King" wrote:
>
>> I wonder if silver negatives developed in staining developer like Pyro
>> might not be considered continuous tone? The stain, which is greatest in
>> areas of highest silver density, effectively fills in betwen the grain
and
>> such negatives give results which are smoother than those of non-staining
>> developers.
>>
>> Sandy King
>
>wouldn't you have to bleach out the silver so that only the stain remains?
Also,
>the way I understand it the stain is a by product of oxidation products
from
>development which would mean they are localized around the grain particles,
so it
>would be more like the chromogenic black and white films with dye clouds
replacing
>the grains. Has anyone looked at a bleached pyro developed neg under
really high
>magnification?
>
How could you ever tell? Your eye sees by small dots at the ends of rods
and cones.
>john
>
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