Exposure memory switch – Canon A-1 User Manual
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Exposure Memory Switch
The A-1 also offers an exposure memory
switch for correcting the exposure in the AE
mode. Essentially, this switch assures correct
exposure by exposing the picture for your
subject no matter what the surroundings are.
When you press in the exposure memory
switch, it locks the exposure value (EV) for
whatever you are metering. You can then
compose the picture as you wish, and it will
come out correctly exposed for whatever
you metered. An extra advantage in this is
that, depending upon whether you are in the
shutter-speed priority or aperture priority
AE mode, you can change either one and the
camera will automatically select the other to
arrive at the same locked-in exposure value.
For instance, suppose you want to take a
portrait of a subject against the sun. First
move in closer to your subject until it is
centered in and taking up about one-third of