Canon EF Lens to Micro Four Thirds T Speed Booster XL 0.64x

Optical Increase maximum aperture by 11/3 stop Increase MTF Makes lens 0.64x wider Patented 6-element/4-group optical design by Caldwell Photographic in the USA Supports 4k video mode with DX lenses (except on GH5). Electronic Autofocus Can be powered either by camera body or by third-party external 5V power source (not included) Iris/aperture controlled by the camera body Smooth iris support with the latest Canon (2009+), Tamron (SP series 2013+) and Sigma (2016+) lenses Image stabilization (IS) lens support Support for cameras with in-body image stabilization (IBIS), including Panasonic GX7, GX8, GX80/85 and Olympus cameras Electronic manual focusing (e.g. EF 85/1.2L II and discontinued EF 50/1.0L) EXIF (focal length, aperture, zoom range) Distance and zoom display on camcorders (requires lenses supporting distance information) Canon Cinema EOS lens (CN-E Compact-Servo) support, including AF (requires external 5V power through micro USB port), auto iris and servo zoom Other Detachable tripod foot compatible with Arca Swiss, Markins and Photo Clam ball heads. The opening is flocked with felt material to reduce internal reflection.