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Canon EF 1200 mm f/-5.6 L USM in a display case
Canon EF 1200 mm f/-5.6 L USM in a display case
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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