Allows for Canon EF EF-S lens to be used on M mount camera body.
It will allow you to use for Canon EF EF-S manual focus lenses on Canon M series mirrorless cameras. It will work on such cameras as M M2, M3, M10 cameras.
There is no electronic element in the adapter, aperture and focusing must be manually control.
And you can use the maximum aperture of the EF/EF-S lens only.
Please installing / uninstalling the adapter after turning off the camera.?