Pulling Ilford HP5 Plus 400 ISO film to 12 ISO. Possible?
Originally Posted by Gerald C Koch
The recommended version of Farmer's Reducer for over-exposure, that is cutting or sub-proportional, cannot be reversed as the thiosulfate in it removes the excess silver. This why the reducer should be adjusted to work slowly so as not to reduce the negative too much. This is accomplished by changing the amount of ferricyanide. The density of the negative must be checked periodically during the process.
The Noteworthy Ones - Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1 / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic
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