Electro-Focus Short back focus

E1912684 UNEXPLORED

Electro-Focus Short back focus (EF-S) is Canon’s lens mount standard designed for digital SLR cameras with APS-C–sized sensors, allowing more compact and lightweight wide-angle lenses by placing the rear element closer to the image sensor.

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Electro-Focus Short back focus canonical	1

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Canon EF-S lens mount → abbreviationExpansion → Electro-Focus Short back focus ⓘ