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Canon EF-M lens mount
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The Canon EF-M lens mount, introduced in 2012, is a derivative of the Canon EF lens mount designed for use with the Canon EOS M mirrorless interchangeable-lens camera. The EF-M lens mount is one of Canon's two new systems for mirrorless cameras, the other being the RF mount.
EF-M lens mount of a Canon EF/EF-S to EF-M adapter mount
EF-M lens mount of a Canon EF/EF-S to EF-M adapter mount
Mount Adapter EF-EOS M
Mount Adapter EF-EOS M
EF-M 11–22 mm f/4–5.6 IS STM
EF-M 11–22 mm f/4–5.6 IS STM
EF-M 15–45 mm f/3.5–6.3 IS STM mounted on an EOS M6
EF-M 15–45 mm f/3.5–6.3 IS STM mounted on an EOS M6
Canon EF lens mount
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The EF lens mount is the standard lens mount on the Canon EOS family of SLR film and digital cameras. EF stands for "Electro-Focus": automatic focusing on EF lenses is handled by a dedicated electric motor built into the lens. Mechanically, it is a bayonet-style mount, and all communication between camera and lens takes place through electrical contacts; there are no mechanical levers or plungers. The mount was first introduced in 1987.
The electronic contacts (gold-plated) of an EF mount lens.
The electronic contacts (gold-plated) of an EF mount lens.
The EF mount of a Canon EOS 50
The EF mount of a Canon EOS 50
Electronics of an EF-S lens
Electronics of an EF-S lens
An EF lens showing its different controls and features
An EF lens showing its different controls and features