finally my tests are done and here's the report of pushing ilford 400 to EI800. developed @24c for 10 mins, with two rolls in 650 ml of D76 1+1, 15 secs of vigorous agitation every minute. this gave me the maximum shadow detail without blocking the highlights much, and i could print it straight on sterling grade 1 paper. there was a bit of grain, but nothing alarming to turn me off. for that, i must compare shooting on a higher speed film. hope this helps.(posted 9161 days ago)