A set of two 12mm and 24mm adapter rings for Canon cameras with an R-mount transferring full information between the body and the lens. Thanks to the rings you can place the camera closer to the subject and get the effect of zoom.

The MK-C-AF1-B adapter  ring set is equipped with contacts transferring all information about exposure parameters to the camera body. This means that all automatic camera modes will work with them. 

Adapter rings with AF and exposure are equipped with contacts that transfer all information about the exposure parameters to the camera body. All automatic camera modes will work with them. For newer lenses equipped with an AF engine, it will also work. Older lenses in which the AF drive is transferred by means of a mechanical clutch will work in manual focus mode.