Yashica Twin Lens Reflex Guide - Focal Press January 1964
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BLACK-AND-WHITE FILMS
The ASA speeds are the minimum correct exposure ratings (page 19). Some manufacturers may, however, still be quoting
their speeds according to the older system to give more liberal exposure. TYPE: P = panchromatic; Pr. = panchromatic
with increased red sensitivity. GRAIN: uf. = ultra fine grain; ef. -- extra fine grain; fg. = fine grain; mg - medium grain.
AVAILABLE AS: r = roll film size; m = miniature (35 mm.) film size: the latter can be used only in conjunction with the
cine film kit of Model 635.
