This adapter can not be compatiable 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 adapterIn this case since the lens does not have the ability to have its aperture controlled by the camera bodyYou can with manual mode or aperture priority modeFor this inchAF inch adapter, it is didn't mean you can use Auto focus, it only have an indication (bee sound) when you manual focus actuallyFor F AI AIS lens to EF 5D 7D 600D DC192This fabulous Adapter can enable cameras to work with a variety of accessoriesIt will allow the owner to widen the scope of photography they undertakeWith -Confirm ChipEXIF is fixed 50mm f1.4Supports AV (Aperture Priority) and Manual Modefixed a bug of focus on 60D, 550D, 7D, and reprinted contactsMake AI mount lenses can be used on EF camera bodyIt is a aperture pin stop down flange versionIt is possible to use Macro rings and other accessoriesIt can focusing infiniteMaterial: Chrome-plated BrassColour:silverTo Mount:Attach the adapter onto the Lens, then mount them onto the cameraTo Remove:Remove both lens / adapter together from the camera, then press the lens lock and then remove the adapter from the lens simultaneouslyPackage Contents:1 x Confirm Lens to Camera Mount AdapterOnly the above package content, other products are not included.Note: Light 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.