> How much grain is there in IMAX films? I've read that a 15-perf 65mm IMAX negative shot with slower film stocks is "virtually grainless", even when viewed on

> How much grain is there in IMAX films? I've read that a 15-perf 65mm IMAX negative shot with slower film stocks is "virtually grainless", even when viewed on a 70ft screen. Grain is apparently noticeable in IMAX films when large/fast stocks are used and pushed toward their limits, and (of course) when smaller-format film stocks have been blown up.