Canon AE Motor Drive FN Instructions Manual page 23

24
Notes
1. If there are no batteries in the motor drive (Bat-
tery Pack FN) or if loaded and their voltage drops
below operating level (Battery Pack FN or either
Ni-Cd Pack), shutter-priority AE photography is
impossible. In this case, setting the lens' aperture
ring to the "A" mark will lock all shutter buttons ,
thus preventing shutter release. To use the
camera manually, simply remove the lens' aper-
ture ring from the" A" mark and set an aperture
in the usual manner.
2 . Shutter-priority AE is possible even if the mode
selector is OFF as long as the lens' aperture ring
is on the "A" mark. In this case, the film will not
be advanced automatically and the shutter must
be released with the camera's shutter button or
the motor drive's vertical-position shutter button.
3 . When the AE Finder FN is used in conjunction
with the camera and motor drive, continuous
shooting is possible in the stopped-down AE
mode. For correct exposure with an FD lens, set
an aperture smaller than f / 2 .8.