42Lens Signal CouplingLens Signal CouplingLens Signal CouplingLens Signal CouplingAperture Signal Lever:The Aperture Signal Lever transmits the f/stop of theautomatic aperture to the camera body. It is on aone-to-one movement basis with the aperture throughlever manipulation. When the aperture ring is set at the"A" mark for AE photography, the aperture signal leveris disconnected from the aperture ring. The apertureopening can then be set automatically by the Servo EEFinder. The aperture signal lever has a safety device sothat the lever is set to the starting position when theBreech-lock mount ring is turned to the attached posi-tion.Full Aperture Signal PinThe Full Aperture Signal Pin relays the lens's maximumaperture to the meter. This compensates for the meterdeviation of the open aperture metering.Automatic/Manual Aperture LeverThe Automatic/Manual Aperture Lever functions tostop-down the aperture to the preset position. This isthe lever that must be locked for manual diaphragmcontrol with a non-coupled accessory.EE Lock PinThe EE Lock Pin is a protective pin used to prevent theaperture 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 EElock pin. To disengage from the "A" mark, turn theNot For Resale – Free Download at http://www.joe-chan.com/manualsPositioning PinMountPositioningPoint“A” MarkEELockPinEESwitchPinAutomaticAperture LeverFull ApertureSignal PinApertureSignal Lever