Canon A-1 User Manual
Page 31
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When removing a lens, take speciгll care not
to damage the protruding pins and levers
on the rear. With the exception of the Fish-
eye 7.5mm lens, always put a lens down
with the rear facing up.
Whenever you mount an FD lens on the A-1,
its
maximum
aperture
is
automatically
transmitted to the camera’s AE circuit. Even
if you switch to an FD lens of a different
maximum aperture, the mounting procedure
is the same as that described above and re
quires no adjustment.
All five AE modes are possible with an FD
lens. See SETTING THE LENS FOR AE
PHOTOGRAPHY. Of the five AE modes,
only stopped-down AE is possible with an
FL lens.