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not good at auto focusing Pentax 645 mount lens
Not suitable for EF-S lenses
For using Nikon Z mount mirrorless digital cameras with all Olympus OM mount lenses
one can try to use the adapter as the manual adapter
0.72x Focal Reducer Speed Booster Adapter for M42 screw lens to Micro 4/3 MFT - Olympus OM-D Panasonic GH5 speed booster not good at auto focusing0. 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