Canon A-1 - Manual (Page 64)

Warnings of Incorrect Operation in
Stopped-down Photography
Two problems can arise if you use the
camera incorrectly in the stopped-down
mode. The first problem occurs if the stop-
down lever of the camera is locked in
before you mount the lens. If you expose a
frame in this situation, it will be incorrectly
exposed due to incorrect coupling of the
aperture ring. To prevent this, before you
mount a lens, make sure there is no red dot
beside the stop-down coupling lever inside
the camera body. The red dot is very con-
spicuous and appears only when the stop-
down lever is pushed in.
The second problem arises if you push in the
camera's stop-down lever and, before taking
a shot, release the stop-down lever and
return the lens aperture ring to the “A”
mark. If you then try to press the shutter
button, you will notice that neither it nor
the film advance lever will operate. What's
more, this is when the “EEEE EE” mark will
flash in the viewfinder whether the view-
finder display switch is turned off or not.
This appears to be a distressing situation, but
it is very easily corrected. Push the film
advance lever into its retracted position close
to the camera body. The multiple exposure
lever is underneath. Push it to the left. Now
turn the film advance lever. With this opera-
tion, the camera will work in the normal
way.
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