Specifications

preview switch, or the AE lock switch uses battery power. Take care that nothing
presses on any of these when the camera is not in use. 5. Remove the battery if you
do not expect to use the camera for about three weeks or longer. With normal use,
the battery should last about one year.
6. Do not try to take the battery apart and never dispose of it in fire.
7. Try to make a habit of checking the battery at the
following times:
• After loading a new battery.
• If the shutter won't function when the main
switch is on "A"
• Before and after making many long exposures.
• After storing the camera for a long time.
• When you are using the camera in low
temperatures.
• Before going on a trip.
• When the camera is used very frequently.
• Before shooting important events.
Viewfinder Information for Canon AE-1 Program
The AE-1 PROGRAM's viewfinder is especially bright to facilitate viewing and
focusing. It displays only the necessary information, using a Light-Emitting Diode
(LED) system of illumination. The degree of LED illumination changes in four stages
depending on the brightness of the subject. When the subject is brighter, the LED
brightness is slightly higher; it is slightly lower with a darker subject.
Thus the LED maintains an almost consistent degree
of brightness to the human eye.