B4-Canon EOS R Adapter



Mount adapter

100 In Stock

Pixco B4 Lens to Canon R Mount Camera Mount Adapter Ring


  • This adapter gives you the ability to use your irreplaceable prime lens and saves you the cost of purchasing new lenses
  • The adapters are precision made to insure the perfect fit.
  • Allows focus infinity.
  • Diaphragm control of the lens is set manually.
  • High quality and compact.
  • Made of aluminum


Suitable for:

B4 Mount Lens

Canon EOS R Mount Camera



Please note 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 can't have its aperture controlled by the camera body.

You can shoot with manual mode or aperture priority mode. Set your camera to"shooting without lens" mode


Package Includes: 

1X B4 to Canon EOS R Lens Mount Adapter Ring