Canon AE-1 PROGRAM Instructions Manual page 42

change in aperture automatically by means of
the shutter-speed priority AE mode. In program-
med AE, the camera automatically chooses a
combination of shutter speed and aperture for
correct exposure.
There are usually several combinations of shut-
ter speed and aperture which will give the same
exposure. This fact is the key to one of the most
creative tools in photography. Find out more
about it in the next three sections.
HDUDD
1 5.6
1.8
1.4
o
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