Nikon FM3A Instruction Manual page 28

Exposure-Compensation Indicator (Continued)
Exposure compensation using the exposure-compensation indicator
It is possible to adjust ±2 EV in units of 1/3 EV.
While holding down the expo-
sure-compensation lock release
1 1 1
1 1
button , rotate the film-speed
1
setting ring
When you set the film speed to ISO 12, compensation to the + side is disabled (the setting
ring may rotate, but the speed remains at ISO 12). When the film speed is set to ISO 6400,
compensation to the – side is disabled. (The setting ring will not rotate further.)
28
2 2 2
2 2
.
Set the compensation index to
2
the desired compensation value.
... Confirm the ring is firmly set down and locked
in a clicked position.