Setting the film speed, Setting the fiim speed – Nikon Camera F3AF User Manual
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Setting the Film Speed
To program the F3AF to give the correct exposure with a par
ticular film, you must first set the camera to the correct film
speed. The film speed, represented by an ASA/ISO number, is a
numerical rating of the film’s sensitivity to a given amount of
light: the higher the number, the greater the sensitivity, and vice
versa. This number is printed on the film carton and the cartridge
itself. To handle all film types, the camera’s ASA/ISO dial
®
has
settings from ASA/ISO 12 to 6400. Two dots between each pair
of ASA/ISO numbers stand for intermediate settings, such as
64, 80, etc. The table above gives the speeds for all intermediate
settings.