Use B4 2/3" lenses on a Micro Four Thirds mount camera with a Super16 sensor. This means you can use your B4 lenses on the Blackmagic Pocket Cinema Camera.

Please note: although it has a Micro Four Thirds mount, this adaptor will not cover anything larger than a Super16 size sensor.

There will be approximately 0.8 stop of light loss when using this adaptor.