> If some 2415 turned out to be not very hypered, say, 0.05 above base > not very fogged at all), can you then stick it back in the tank and hyper it some >more? yes ... that is generally how one does a test ( crude, first order ) to determine a semi-close hypering time for an unknown film .... hyper , cut off a piece for processing, hyper more ... etc etc etc ... Brad Wallis