longer developing times with higher dilutions

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What are the advantages/disadvantages of using longer developing times at hight dilutions, beyond better control over the whole process? Do I get higher sharpness? more grain?

-- ahmad hosni (xosni@netscape.net), July 21, 2000

Answers

Generally you'll get slightly better acutance, slightly more graininess, and perhaps put a bit of a shoulder into the curve shape.

These differences can be rather subtle (D-76 1:1 vs 1:3) to more obvious (Rodinal 1:25 vs 1:100).

If you want to try it, if you double the dilution give about 1.4X the development time. You may find an EI decrease, maybe not.

-- John Hicks (jbh@magicnet.net), July 21, 2000.


If you live in an area where the water is high on carbonat, you better use "destillated" water. I get truble with ID11 1 + 3 and Ilford Delta 400.

-- dominik (sehen99@gmx.ch), July 23, 2000.

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