Description：

This adapter ring allows M42 lenses (for Pentax, for Praktica, for Mamiya, for Carl Zeiss, …) to be used on for RF Lens Mount Cameras. 

It is possible to use Macro rings and other accessories 

Completely manual control, manual focus and manual exposure

Diaphragm control of the lens is set manually.

Material: Made of brass and aluminum  

Color: Black ；Silver

Brand new and high quality

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 doesn't have the ability to have its aperture controlled by camera body.

Suitable for: 

for M42 Mount Lens to for EOS R Camera

Package included：

1pc x Ultra-slim Macro Adapter M42-EOS R