Table of Contents
Advertisement
• The preset aperture ring can also be set between two
f/stops
.
Presetting of Aperture
In the case of the FD or FL lens, the field ·of ·view can always
be seen through the viewfinder at full aperture opening even
after the f/stop has been set with the preset aperture ring
.
Set the desired f/stop on the preset aperture ring to the
index.
The diaphragm will close down to the preset f/stop
only for the instant that the shutter is released.
Except
for that instant, the diaphragm remains fully open
.
Manual Control of Aperture
1
By pressing down or locking the stopped ·down functioning
lever and turning the preset aperture ring
,
the diaphragm
can be closed down to any
f/
stop and the depth·of·field at
the time of shutter release can be checked
.
When the lever
is returned to its original position, the diaphragm again re-
turns to maximum opening .
• The aperture is manually stopped down also when per-
forming close-up photography and macrophotography.
2
When an accessory is used between the lens and the
camera body, turn the automatic/manual aperture lever
of the lens counterclockwise all the way before mounting
the lens.
This locks the lever and the diaphragm can be
opened or closed by turning the preset aperture ring.
For
releasing the lever, turn it clockwise.
16
FD 50mm F l.4 S.S.C
.
Automatic/
Manual
Aperture Lever
Advertisement
Table of Contents
