JohnSwanda wrote:
While pull [you meant push, perhaps] processing is usually used to increase ISO in low lighting, pull processing is used to lower contrast by using a lower ISO and then reducing development in order to decrease contrast, such as a sunny day with deep shadows.
My favorite ASA for Plus-X was 32 and 50 for Tri-X. One of the major magazines in the early 70's also rated Tri-X best at ASA 50. The higher standard, or published ASA ratings were compromises between the need for speed while maintaining acceptable latitude ranges and IQ. My compliments to anyone who managed to push color films while maintaining good color balance.