From: Sandy King (sanking@clemson.edu)
Date: 04/29/03-08:45:18 AM Z
Cor wrote:
>
>Are you still using the developer single-shot in small amounts?
Recently I have been printing from digital negatives of just one
contrast so I have gone back to using the developer in one liter
bottles. However, if you have a lot of negatives of different density
range on hand I would recommend the single-shot approach because it
avoids having to keep on hand a large number of bottles of developer
to hand all of the contrast ranges one typically sees from in-camera
negatives.
>
>Do you have perhaps a nice table , like the one in PF8, but now for the
>amounts of dichromate in the oxalate/silver sensitiser?
I don't add the dichromate to the oxalate/silver nitrate sensitizer.
I add it directly to the developer. Adding it directly to the
sensitizer turned out to be much too tricky for me because even a
minute quantity of dichromate added to the sensitizer can have a huge
impact on the highlights.
Sandy
>
>Thank you in advance!
>
>Best,
>
>Cor
>
>
>> and this worked very effectively without any apparent increase in
>> grain until I reached the equivalent of about 20ml of a 4% potassium
>> dichromate solution per liter of developer. More than that amount and
>> printing speed dropped a lot, and grain increased significantly. With
>> the potassium dichroamte the limits appear to be a DR of about 2.4
>> down to about 1.2 with no loss of image quality.
>
>
>...
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