Canon AE-1 - Manual (Page 56)

lens is mounted on the camera^ the diaphragm
blades will open or close by turnir^g the
aperture
r\ n q . To revert from manual aperture
control, reset the manual lock lever at the
position of the white dot.
3 Lock for Manual Aperture Control
When Using the Macro^oto Coupler(3)
In dose*up photography of high mag*
nification with a lens reversed on the Macro*
photo Coupler, the automatic diaphragm
mechanism is not coupled. You most, there*
fore, remember to close down the diaphragm
manually after having locked the automatic
aperture lever in the manual position as ex*
plained above in (1) and 121. Then, fix the
Macfophoto Hood on the lens mount by
turning the bayonet ring.
When you are taking $toppad*down meter
readings, the manual aperture control
signal above the aperture scale imide the
viewfinder flashes on ar>d off only when the
shutter release button is depressed halfvray.
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