This adapter allows you to connect Canon EF lenses to the ZWO EFW 2" filter wheel and accessories that use an M54 thread such as the ZWO M54 filter drawer. The thread is M54 x 0.75, so it cannot be connected to the 1.25", 31mm or 36mm EFW.
Note: the sensor tilt adapter needs to be removed before you connect the camera to the EFW 2" filter wheel.
|Connection lens side||Canon EF (bayonet)
|Connection camera side
||M54 x 0.75
|Compatible filter wheels