Will PMK Pyro on TMAX100 and DELTA100 produce any noticable differences compared to ID-11 1-1 or Perceptol 1-1 when using 35mm and 5x7, 8x10 or somewheres around 31/2 by 5? Also, some negatives have been coming out darker on some areas then some other areas. Someone please explain that. Am I not agitating enough? Its AgfaAPX100 with Perceptol 1-1. I agitate throughly, every minute or two for thirty seconds. OH - Does PMK Pyro have any seperate versions? PMK Pyro I, II, III?