This adapter can not be compatible with Full Frame Camera and 650D, 700DAlthough the lens will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter. In this case, since the lens does not have the to have controlled by the camera bodyYou can with manual mode or priority mode. For this inches inch adapter, it is didn't mean you can use Autofocus, it only have an indication (bee sound) when you manual focus actuallyFor F AI Lens to EF 5D 7D 600D DC192This fabulous Adapter can enable cameras to work with a of accessories. It will allow the to widen the scope of photography they undertakeWith -Confirm ChipEXIF is fixed 50mm f1.4Supports AV ( Priority) and Manual Modefixed a bug of focus on 60D, 550D, 7D, and reprinted contactsMake For AI mount lenses can be used on EF camera bodyMaterial: Chrome-plated brasscolour: silverPackage Contents:1 x AdapterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.