The OWL Drop-in Filter Adapter from DEO-Tech adapts a Canon EF lens to a camera with an MFT mount. This adapter can mount onto any Canon EF lens; including ultra-wide, fisheye, or tele lenses. It attaches to the rear of the lens instead of the front and accepts all 52mm filters, eliminating the need for different size filters for different lenses. This adapter can also be used to protect the image sensor from dust, water, and oil; just attach it to the camera mount and insert a filter into it.

Compatibility

Canon EF mount lens
Micro Fourth Thirds camera and camcorder