EF-EOSM Lens Mount Adapter allows you to place for Canon EOS lens(EF/EF-S) on your EOS M(EF-M camera body). This pinned adapter will allow electronic pass-through, giving the photographer the ability to use the auto-exposure, auto-aperture and auto-focus on the lens. The lens mount adapter is precisely made from high-quality materials to ensure the perfect fit. Infinity focusing is guaranteed. Anodized aluminum construction with smooth surface for effortless mount. Before using this adapter, please make sure that the camera and the lens are compatible. Description: EF-EOSM is a Canon EF mount adapter to EOSM mount autofocus adapter ring, the main function is to connect the mount, link the wire, and do not affect the performance of the camera and lens. All EOSM series cameras and most EF and EFS full-frame half-frame lenses are supported, so please feel free to buy. Suitable for: Lens: for Canon EF / EF-S mount lenses. Camera: for Canon EF-EOS M adapter: EOS M / EOS M2 / EOS M3 / EOS M5 / EOS M6 / EOS M10 / EOS M50 / EOS M100 Model:EF-EOSM Compatible Lenses:EF series lenses Feature: Robustly built for heavy-duty use - zinc alloy dis casting core with a detachable metal stand. Prefect performance ensured-all the contact pins are made in copper then electroplated with gold for greatest conductivity All the parts are made in tight tolerance molds, which make the adapter for long time and comfortable use. Electronic auto focus.Focus infinitely.high-technics treatment on the contact pins,permitting perfect signal transmitting between lens and camera. Support the existing function of the lens. with 1/4Inch tripod hole. Material: zinc alloy dis casting core with a detachable metal stand. Tripod Socket: Cu1/4 * 1 Max. Diameter and Length: 6.66x2.6cm/2.62x1.02in Item Weight: 188g/6.6oz Color:Black