BTW a couple of tips for APX100 in Rodinal
- Diluting Rodinal gives negatives with smaller grain and longer tonal scales. Dilutions higher than 1+75 act slowly, and agitation becomes important. Agitate every 3-5 minutes at most! 1+100 for 25-30 minutes is not uncommon, I agitate once every 5 minutes.
- Rodinal works best with colder water, temperatures of 65-68F (18-20C) are the highest. After I heard this I tested with cold water (15C) and the quality was a bit better. Try to avoid high temperatrues.
- AGFA times are a bit on the dense side, I'd cut 15-20% from them. Specially for scanning.
- Adding vitamin C (4 g/l) and neutralizing it with baking soda (til the fizzing stops) adds another notch to working with Rodinal. 1+100 and 1+50 benefit the most.
Look in unblinkingeye for an article about this