Thomas Bertilsson
Member
I wouldn't take the times in the MDC as a indicator of anything, for many years (at least 27) I've processed APX 25 & 100, Tmax100 & 400, EFKE PL25, HP5, Fuji Acros, Delta 100 & 400 for the sames time (for normal development) in Rodinal, Xtol and now Pyrocat HD with superb results. Probably because I'm processing for a long tonal range this helps to bring the ideal development times very close. So only Foma films fall outside that as far as I'm concerned.
It's worth noting that before Colour films became dominant in the D&P market all B&W films were processed to a standard dev time in commercial D&P processing labs.
Ian
Ian,
How long is your standard processing time using Pyrocat-HD? Do you use the 20*C temperature, or some other?
I remember using it at 1+1+100, and virtually all films received 13 minutes developing time at 20/68 C/F.
All films were overexposed by about 2/3 stop. Mostly I used Tri-X and TMY, but also FP4+, TMX (EI 50), and some APX 100.
Then I started using Foma 400 a fair amount, and I ended up having to go with 10 minutes and I shot the film at EI 200.