Welcome to onlyyou If u want to know more about our products,pls follow us, click #onlyyou M42-EOS M Lens Mount Adapter Ring for M42 Lens to Canon EOS M Series Cameras for Canon EOS M M2 M3 M5 M6 M10 M50 M100 Mirrorless Camera Features: Lens mount adapter Allows M42 screw mount Lens to fit on Canon EOS M series cameras. Full manual operating, the aperture and focus must be manually controlled, it can aieve manual exposure and aperture priority exposure. When using the adapter ring for the first time, please turn on the #34;no lens release shutter #34; option in the fuselage menu, otherwise the transfer lens will not be recognized. High quality aluminum alloy, all metal material, durable to use. Specifications: Color: Black Material: Aluminum Alloy Applicable Models: For Canon EOS M series cameras Item Weight: 65g / 2.3oz Package Size: 7.0 6.9 3.4cm / 2.8 2.7 1.3in Package Weight: 75g / 2.6oz Package List: 1 Lens Mount Adapter