Canon F1-N Brochure & Specs page 63

1. First advance the film to the next frame.
2. Then take up any film slack. To do this, unfold the rewind crank and gently
turn it in the direction of the arrow until it stops.
3. Focus, compose your subject and take the picture.
4. Turn and press down the rewind lever in the usual manner; the film will now
retain stationary for multiple exposures.
5. Gently turn the film advance lever. This will cock the shutter for the next
exposure.
You can make any number of exposures on the same frame simply by repeating
steps 3, 4 and 5 above in the proper order. Each time you turn the film advance
lever, the camera's frame counter will advance once. There is, however, a possibility
of slight movement of the film if you make an excessive number of exposures on the
same frame.
If you have engaged the rewind lever for multiple exposure and wish to cancel it,
lightly press the shutter button before turning the advance lever. Note that it is
not advisable to make multiple exposures on the first or last several frames due to
possible film curl which may adversely affect image registration.
26 MULTIPLE EXPOSURES
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