Desription:

You can use this adapter ring for Contax Yashica CY C/Y lenses to mount with your Canon EOS cameras, with the newest 9th generation chip, it could work on most of the Canon DSLR. (except 5D Mark IV and 6D Mark II and above)

Feautres:

With AF confirmation 9th generation chip.
The ring enables camera viewfinder focus confirmation light and confirmation sound.
Please installing / uninstalling the adapter after turning off the camera.
It can focus to infinity.
Supports AV (Aperture Priority) and Manual Focus Mode.
Material: Metal
Color: Silver
Note: Please open the "No lens release" in manual when first use it, otherwise it may can't recognize.

Compatiable with :

Lens: All Contax Yashica CY C/Y Lenses.
Camera: All Canon EOS DSLR and Film SLR （Except 5D Mark IV and 6D Mark II and above）

Package include:

1 * Lens mount adapter ring

Notice:

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 "stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body.
"AF Confirm" doesn't means you can use Auto Focus function, it means that it will automatically occur a "beep" sound as an indication while you using MF.