Canon AE-1 User Manual

Page 57

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Changing the Lens

FD lense$ incorpordts a safety mechanism

to prevent the bayonet ring and the

diaphragm blades from moving when the lens

is not mounted on the carmra. To bypass this

safety mechanism« press the lock pin in the
top recess of the bayonet mount while turning
the bayonet rirsg. Orsce this safety mechanism

has thus been carKdIed. you can see the
diaphragm blades move v^en activated.

Since FD lenses have signal pim arsd

levers which couple with the camera body«
special care must be taken not to damage
them. Ona basic pracaution is to always put
the lens down facing down whenever you
must change lenses.

The following lenses cannot be used with

the built-in meter because the extended rear

part of the lerts will push in the lens speed
adjustmertt pin on the camera body:

19mmf/3.6

R 36mm 1/2.5

35mmf/2.6

R 50mm f/1.8

60mmf/1.8

R 100mm f/2

FL 58mm f/1.2

These lertses should only be mounted on the

camera after the film has been advanced.