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Lens Signal Coupling
Lens Signal CouplingL ens Signal Coupling
Lens Signal Coupling
Aperture Signal Lever:
The Aperture Signal Lever transmits the f/stop of the
automatic aperture to the camera body. It is on a
one-to-one movement basis with the aperture through
lever manipulation. When the aperture ring is set at the
"A" mark for AE photography, the aperture signal lever
is disconnected from the aperture ring. The aperture
opening can then be set automatically by the Servo EE
Finder. The aperture signal lever has a safety device so
that the lever is set to the starting position when the
Breech-lock mount ring is turned to the attached posi-
tion.
Full Aperture Signal Pin
The Full Aperture Signal Pin relays the lens's maximum
aperture to the meter. This compensates for the meter
deviation of the open aperture metering.
Automatic/Manual Aperture Lever
The Automatic/Manual Aperture Lever functions to
stop-down the aperture to the preset position. This is
the lever that must be locked for manual diaphragm
control with a non-coupled accessory.
EE Lock Pin
The EE Lock Pin is a protective pin used to prevent the
aperture of the lens from moving to the "A" mark ac-
cidentally. To set the aperture of the lens at the "A"
mark, turn the aperture ring while pushing down the EE
lock pin. To disengage from the "A" mark, turn the
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Positioning Pin
Mount
Positioning
Point
“A” Mark
EE
Lock
Pin
EE
Switch
Pi
n
Automatic
Aperture Lever
Full Aperture
Signal Pin
Aperture
Signal Lever