This adapter can not be compatiable with Full Frame Camera and 650D, 700D Although 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 body You can with manual mode or priority mode For 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 actually For F AI lens to EF 5D 7D 600D DC192 This fabulous Adapter can enable cameras to work with a of accessories It will allow the to widen the of photography they undertake With -Confirm Chip EXIF is fixed 50mm f1.4 Supports AV ( Priority) and Manual Mode fixed a bug of focus on 60D, 550D, 7D, and reprinted contacts Make AI mount lenses can be used on EF camera body It is a pin stop down flange version It is possible to use Macro rings and other accessories It can focusing Material: Chrome-plated Brass Colour:silver To Mount: Attach the adapter onto the Lens, then mount onto the camera To Remove: Remove both lens / adapter from the camera, then press the lens and then remove the adapter from the lens simultaneously Contents: 1 x Confirm Lens to Camera Mount Adapter Only the above content, other are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.