0.72x Focal Reducer Speed Booster Adapter for M42 screw lens to Micro 4/3 MFT - Olympus OM-D Panasonic GH5

Roxsen Global

0.72x optical glass lens adapter for using Micro Four Thirds (m4/3) mount digital cameras with M42 mount (42mm x 1.0) lenses. (Optional M39-M42 adapter ring for M39 lens) Please be aware of the rear part to prevent collision on camera body. Reduces focal length to 0.72, adjust the image size to near 1:1, so that the focal length of the image is close to 1.5x crop factor, e.g. 50mm x 2.0 x 0.72 = 72mm. Helps to increase the maximum aperture to 1 stop, also can use it faster by 1 stop. Switching c