Gainer writes: Very soon after, all films doubled in speed because the "safety factor" was dropped in the change from ASA to ISO
I would have bet money that the "great ASA shift" came before the ISO standard was introduced. Do you remember the ASA "degree" ratings and all that other folderal?
BTW, did people really use the expression 24/7 waaay back then? I don't remember it. Just like nowadays everyone says "tarmac" but that word came into American useage during the days of the live coverage of jetliner highjacking standoffs. Before that, it was always just plain ol' "asphalt." Remember? BTW, I think Tri-X is STILL an EI 200 emulsion!! (vbg)
John, Mount Vernon, Virginia USA