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Lens signal.coupling, Aperture signal lever, Full aperture signal pin – Canon AE-1 User Manual

Page 96: Automatic aperture lever, Ee switch pin, Reserved pin

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Lens Signal.Coupling

Aperture Signal Lever

This lever transmits the actual f/stop to

the exposure meter. It is coupled to the
aperture ring just the same as when the

aperture ring is not set at the "A" mark.

Full Aperture Signal Pin

This

pin

transmits

the

signal

corres­

ponding to the lens at the full aperture

opening.

Automatic Aperture Lever

This

lever

closes

down

the

aperture,

coupled

with

the

stopped-down

coupling

lever.

EE Switch Pin

This pin protrudes when the aperture ring

is locked at the "A" mark. In this position, it

transmits a signal for AE photography.

Reserved Pin

This pin is designed for use with ac­

cessories that may be developed in the future.