Canon A-1 - Manual (Page 66)

With an FD lens, if you set the AE selector
to Av instead of TV while the lens is away
from the “A ” mark, the digital readout will
show the aperture you have set on the AT
dial plus the corresponding camera-selected
shutter speed as in aperture priority AE
along with “M” for manual aperture setting.
Although you are no longer in manual
override, it is possible to make an exposure
correction by setting the lens aperture ring
to a different aperture than that on the AT
dial. Exposure will be made at the aperture
set on the lens aperture ring and the camera-
selected shutter speed.
Self-Timer
The self-timer is usually used either so that
you can include yourself in a picture or as an
alternative to a cable release for the softest
possible shutter release in delicate photogra-
phy, such as photomacrography and pho-
tomicrography, or on other occasions when
long exposures are necessary. This particular
self-timer allows a time-lag of either two or
ten seconds.
To use the self-timer, first make sure the
film is wound and that the shutter speed is
not at “B”. If the film is not wound, the
self-timer will act, but the shutter will not.
The self-timer will not function normally at
“B”. Now set the main switch to 2 or 10.
Focus and compose your picture. You may
press the exposure preview switch to check
the exposure. However, remember that,
since the A-1 is designed to reflect any last-
second changes in exposure when in an
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