Canon A-1 User Manual
Page 108
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taken.
To set the camera in the stopped-down AE
mode when using a non-FD lens, simply fold
and push in the A-Ts stop-down lever.
When using an FD lens, first advance the
film and then disengage the lens aperture
ring from the “A” mark before you push in
the stop-down lever. If the film is not
advanced before turning the aperture ring
from the “A” mark, the lens will stop down
only as far as the aperture set for the
previous exposure. It is impossible to push in
the stop-down lever when an FD lens is set
at “A”.
When in the stopped-down AE mode, it does
not matter whether the AE mode selector
is set to Tv or Av. The camera will behave as
if it was in the aperture priority AE mode.
You must select the aperture by turning the
lens aperture ring while th^ camera will auto
matically select a shutter speed. When you
preview the exposure, only the shutter speed