Canon A-1 - Manual (Page 57)

3. In programmed AE mode
Both the shutter speed LED and the aper-
ture LED flash on and off simultaneously to
warn you of overexposure as well as under-
exposure. In taking exposure readings, the
shutter speed and aperture combination
changes as they are programmed in the
camera. However, if there should be too
little light to be exposed correctly even at
the maximum aperture, the maximum aper-
ture of the lens in use will remain fixed, and
the camera will work in aperture priority
AE, controlling the shutter speed to produce
correct exposure. If the camera exceeds the
limit of the meter coupling range, the
shutter speed and aperture LED values that
flash depend on the lens used and the ASA
film speed. When the data flashes on and off
in programmed AE, photography is no long-
er possible in that mode unless you change
the light level or switch to a more appro-
priate film.
Double-Check Before Shooting
1. Is the aperture ring of the lens set
to the "A" mark?
2. Have you checked the battery
power level?
3. Have you properly set the AE mode
selector?
The TV setting (shutter priority AE)
is preferable for action photography.
The Av (aperture priority AE) is
preferable for still photography.)
4. Did you set the film speed pro-
perly?
This is essential to the proper
operation of the camera. See that the
memo holder tells the type of film
loaded in the camera.
5. Is the film properly loaded?
You can use the rewind knob as an
indicator that the film is properly
loaded. Every time you advance the
film, the rewind knob should rotate.
6. Is the main switch set to the "A"
mark?
At the "L" setting, the shutter button
is locked.
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