Shooting With A Non-Fd Lens - Canon AE-1 PROGRAM Instructions Manual

20. Shooting with a Non-FD Lens
'5.6
With a Canon FD lens, metering is done with the
lens diaphragm at its widest opening. This is
called "full-aperture metering ."
Stopped-down Metering
With a Canon FL lens, the TS 35mm lens or any
other non-FD lens, full-aperture metering is not
possible . The lens must actually be closed (stop-
ped down) to the shooting aperture for metering .
This is called "stopped-down metering ." In stop-
ped-down metering, the lens diaphragm will
open or close as you turn the aperture ring.
1. Push the stop-down lever towards the lens
until it locks.
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2 . Make sure the shutter speed selector dial is
NOT on "PROGRAM ."
3. While pressing the shutter button , turn the
aperture ring until the stopped-down metering
index and 5 .6 appear. Correct exposure can-
not be obtained with any other display.
4 . Press the shutter button all the way down for
exposure.
Notes
1. Stopped-down metering is not possible when
the shutter speed selector dial is set to
" PROGRAM."
2. You can also press the exposure preview
switch and turn the shutter speeed selector
dial until the stopped-down metering index
and 5.6 appear.
3. Once the lens is stopped down, you can check
depth of field visually simply by inspecting the
subject through the viewfinder.