Mount Adapter Ring to fit Contax/Yashica C/Y lenses to Olympus and other 4/3 mount cameras. Four Thirds 4/3 System -- for Olympus E Series, Panasonic and Leica 4/3 Digital Cameras (Don't confuse with MICRO 4/3 cameras) All 4/3 adapters allow infinity lens focusing All 4/3 adapters work with manual focus only All 4/3 adapters operate at shooting aperture -- you manually open or close the lens aperture using the lens aperture ring With AV aperture priority AE no aperture value is displayed Manual Exposure metering Use center weighted metering, not spot metering or matrix Mirror lock up lenses can not be used with 4/3 adapters -- the lens protrudes too far into the camera. IF you mount heavy lenses on the 4/3 adapter, be sure to support both the lens and the camera body. This adapter allows M42 Screw type lenses to be used. These include Fujica ST901 (1975) Olympus FTL (1970) Pentacon, Pentax Electro Spotmatic (Japan only), ES, Spotmatic F and ESII (1971, 1971, 1973, 1973) Praktica EE 2 and EE 3 (1977, 1979, EE = Electric Eye) Yashica Electro AX (1972) Ricoh TLS-EE (1973) and corrent Zenit SLRs The aperture required will need to be set manually on the C/Y lens and auto-exposure will then function. If the C/Y lens does not have an aperture ring, maximum aperture will be utilised. TTL flash metering is preserved with this adapter. To Mount: Mount the CY Lens onto the adapter, then mount them onto the Nikon camera. Set the aperture on the lens, switch the camera on, choose any program from the Mode dial except shutter speed priority, focus the lens manually, and shoot. Remove both lens and the adapter together from the camera in the same way you would remove a lens. Then remove the adapter from the lens .

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