Method to determine the speed of a specific sample of a photographic negative material intended for snapshot work in daylight.
NORMA vydána dne 1.1.1941
Designation standards: BS 943:1941
Note: NEPLATNÁ
Publication date standards: 1.1.1941
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategorie: Technické normy BS