KODAK Panchromatic Sound Recording Film 2374 is a high contrast, panchromatic black-and-white film designed for recording variable-area sound track negatives with a tungsten light source, and/or producing digital sound track negatives.

EASTMAN EXR Sound Recording Film 2378E, 3378E (ESTAR) is a high contrast, orthochromatic black-and-white film designed for recording variable-area sound track negatives with a tungsten light source, and/or producing digital sound track negatives.