HP5+ in HC-110 is quite forgiving. I had a roll which I'd shot at EI 400 for the first half and EI 1600 for the second half (don't ask why!). Instead of cutting it in 1/2 and processing each part for the EI it was shot at, I just processed the whole thing as if it had been shot at EI 800. Both halves of the film had perfectly good negatives. Now they might have been a *bit* better if they'd had the "right" processing, but they were certainly acceptable (to me).(posted 8625 days ago)