Hi,Its me again ,well I shot 5 rolls of HP5+, one of them @1600.The ones rated @400 turned out very well,smooth tones with no sudden jumps.The one roll rated at 1600 was a diffrent story.I processed it in microphen as suggested but when you look at the negs they have the dreaded clear areas,very little shadow detail.I will continue to use HP5+ but only @400.(posted 9282 days ago)