Exposure Memory Lock Button - Nikon F3 Instruction Manual

-CONTROLS IN DETAIL-continued----------
Exposure memory lock button
0)
When there is a substantial difference between the main
subject and the background, unimportant bright spots or
20 dark spots are likely to fool the camera's metering , result-
ing in under-or overexposure (see Fig. I). One way to
make exposure compensation is to use the memory lock.
This control allows you to lock in an exposure reading
with the camera on automatic control. To compensate for
an excessively bright or dark background, center the
main subject in the viewfinder or move in close to the
subject, depress the memory lock button and hold
it
in;
then recompose and shoot (see Fig. 2).
(Fig . 1)
So
[ill
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(Fig . 2)