M42x0.75 (T2) female thread to B4 camera mount adapter

• Front side - M42x0.75 female thread
• Rear side - B4 male bayonet mount

Machined from high quality aluminium alloyWhy aluminium?.

This adapter allows using lenses with T2 thread mount on video cameras with B4 lens mount.

Infinity focus is preserved.

IMPORTANT: the adapter front flange is 0.5mm lower than the camera mount retaining ring. This is necessary to reach infinity focus. At least, this is so on our camera.

If your camera has a similar thick retaining ring, then only lenses with less than 52mm rear diameter will fit the camera properly.

The possible solution is to remove the retaining ring from the camera and cut about 1mm from its front side. This is safe, since the ring lugs are about 4mm thick. Reducing them down to 4mm will not hurt.