Canon AE-1 Instructions Manual page 57

F
When the manual diaphragm adapter i s
attached on the rear of one of these lenses,
never mount the lens directly on the camera
or directly on accessories designed for auto-
matic dia~hrasm control, such a s the Auto
.
-
Bellows or Bellows FL.
All chrome-mount-ring FD lenses and
FD Macro lenses are set for manual dia-
phragm control as follows:
1. Before mounting the lens, push theauto-
rnatic aperture lever at the rear of the lensto
the right where it automatically locks.
2. Mount the lens onto the accessory as
usual. The diaphragm will now open and
close as the aperture ring is rotated.
Some of these lenses have an additional
lock lever. With these lenses, the automatic
aperture lever must be pushed fully to the
right and the lock lever pushed to
"L"
to hold
the automatic aperture lever in that position.
When using a macrophoto coupler, the
Macro Hood must also be mounted onto the
rear of the
lens.
You may avoid setting the lens for manual