ANSI PH2.5-1979
Method for Determining Speed of Photographic Negative Materials (Monochrome, Continuous-Tone)

Standard No.

ANSI PH2.5-1979

Release Date

1979

Published By

American National Standards Institute （ANSI)

Latest

ANSI PH2.5-1979

Scope

Enables the determination of American National Standard Speed of camera films including photographic roll films, film packs, miniature camera films, sheet films, and plates intended for the making of monochrome, continous-tone negatives in pictorial still photography.

ANSI PH2.5-1979 history

• 1979 ANSI PH2.5-1979 Method for Determining Speed of Photographic Negative Materials (Monochrome, Continuous-Tone)