Canon EF 300mm lens
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The EF 300mm lens refers to a family of telephoto prime lenses made by Canon, five of which have been sold to the general public and one of which was only made on special order. The lenses have an EF
Canon 300mm f 28 MG 2036
Canon EF 300mm L IS I USM
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Canon EF 300 F4 L
Canon EF lens mount
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The EF lens mount is the standard lens mount on Canon’s EOS family of cameras. EF stands for "Electro-Focus": automatic focusing on EF lenses is handled by a dedicated electric motor built into the le
Canon EF 300mm lens
…prime lenses made by Canon, five of which have been sold to the general public and one of which was only made on special order. The lenses have an EF type mount which fits the Canon EOS line of cameras. When used on a digital EOS body with a field of view compensation factor of 1.3x, such as the Canon…
The rear end of an EF mount lens with its electronic contacts visible
The EF mount of a Canon EOS 50
Electronics of an EF-S lens
An EF lens showing its different controls and features