Adapter to mount Canon FD lenses onto Canon EF/EF-S mount SLR cameras. Autofocus will not be available and the lens has to be used in stop-down metering mode. A "normal" adapter requires a glass element to allow infinity focus, but there is a conversion kit that allows to reversibly converta a Canon FD mount into an EF/EF-S mount (it seems specific for each Canon FD lens and is available from Ed Mika).
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