Response to What is the best developer for Agfa APX 400

In general, the greater the dilution, the slower the development action, and in turn the finer the grain.

I have been very pleased with Xtol at 1+3 dilutions. I have also been even more pleased with a dilution of Xtol with a dash of Rodinal added. For Tri-X I expose at E.I. 200 and develop for 9 minutes at 24 degrees C. with the following fomula: 100 mL Xtol, 400 mL water, 4 mL Rodinal.

I would suggest you try this Xtol/Rodinal blend with APX 400 and see if it gives you the contrast you want. I have used this fomula with not only Tri-X, but also T-Max 400 as well as Ilford Delta 100 and Delta 400. However, you will have to experiment to get the ideal time for APX400... start maybe around 10 minutes at 24 degrees.

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