Quote Originally Posted by Photo Engineer View Post
Mark;
If you repeated that experiment several times, I would guess that these differences would even out and the averages would be virtually identical.
One maxim I learned was "never do any experiment one time".
PE
You guys were right! I re-ran the experiment this evening, but boosting the AA even more, which should have cut the speed even more if my theory were correct. Instead, I got this curve:

Curve11.12-XTOL.jpg

This graph thinks the film-speed is a hair *higher*. I stand corrected: the amount of AA has no effect on speed.

Mark Overton