Asa film speed dial – Nikon F3 User Manual
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ASA film speed dial ®
The scale <H> on the ASA dial has numbered settings for
speeds from ASA 12 to 6400. Two dots between each pair
of ASA numbers stand for intermediate settings, such as
64, 80, etc. The table below gives the speeds for all inter
mediate settings.
12
25
50
100
200
400
800
1600
3200
6400
16 20
32 40
64 80
125 I 250 1
500 i lOOOl 2000l
4000(
160
320
640
1250
2500
5000
21
ASA 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. The ASA of your
film is indicated on the cartridge itself. It is also printed
on the film carton and on the data sheet packed inside.