Description: 1. You can use this adaptor ring for Pentax PK K slot lens with Canon EOS camera, with the latest 9th generation chip, which works on common Canon DSLRS. (except 5D Mark IV and 6D Mark II and above) 2. Confirm the 9th generation chip with AF. The ring enables the camera viewfinder focus confirmation indicator and confirms sound. 3. It can focus to infinity. Support AV (aperture first) and manual focus mode. 4. Material: Metal. Features: 1. Make full use of EOS advanced electronic focus technology, can accurately focus. 2. It's flexible to use multi-point focus of EOS fuselage, up to 45 point focus at present. Gives more flexibility to the composition. 3. It's fast and no longer needs to test our eyesight, EOS has Shared our hard work. Striking focus tips give us more confidence in our photos. 4. Because the optical system of EOS fuselage has not been changed, the framing and metering work according to the factory Settings of the fuselage without influence. 5. AV and M mode of PCB body can be used. Notes: 1. Install/uninstall the adapter after the camera is turned off. 2. Please turn on "no lens release" in the manual on the first use, otherwise it may not be recognized, although the lens is suitable for physics, automatic aperture, autofocus or any other function will not work properly in use. The adapter in this case, stop mode is required for metering because the lens does not have the ability to control its aperture from the camera body. 3. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Included: 1 X PK-EOS Adapter Ring 1. Make full use of EOS advanced electronic focus technology, can accurately focus. 2. It's flexible to use multi-point focus of EOS fuselage, up to 45 point focus at present. Gives more flexibility to the composition. 3. It's fast and no longer needs to test our eyesight, EOS has Shared our hard work. Striking focus tips give us more confidence in our photos. 4. Because the optical system of EOS fuselage has not been changed, the framing and metering work according to the factory Settings of the fuselage without influence. 5. AV and M mode of PCB body can be used.