Canon EF Instructions Manual page 24

BASIC OPERATION
• The Canon EF has an Automatic Blank Shot
Mechanism which frees the photographer from using
the shutter button during film loading. The winding
lever works independently of the shutter button
until frame number one is reached.
• Avoid direct sunlight when loading or unloading
the film. If no other shade is available, then turn
your back on the sun and use the shadow of your
body to shield the camera while loading.
• Commercially available cartridges come in 12, 20
and 36 exposure rolls. One way to save money on
the cost of film is to bulk load your own cassettes.
Bulk film in 50 or 100-foot rolls, a bulk film loader
and some reloadable cassettes are all you need. A
darkroom is not necessary. For more information,
contact your local camera dealer.
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Canon FD 17mm f/4 S.S.C., 1/500 sec., AE,
ASA 400