Canon AE-1 User Manual
Page 84
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Shooting Against the Light with the
Backlight Control Switch
In most cases, the Canon AE-1's Central
Emphasis Metering system will give correct
exposure readings in AE photography. How
ever, you will occasionally encounter situ
ations in which normal AE photography
would not provide a correct exposure reading
of the main subject. For example, when you
photograph a person standing in a room with
a brightly lit window at his back, the subject
will be underexposed. In order to properly
expose the main subject, the backlight control
switch is provided. When it is held in as the
shutter is released, the aperture is automatical
ly opened up by one and a half f/stops more
than normal.