40mm focal length, Lens not zoom able, 64mm equivalent focal length on Canon APS-C cameras
Minimum focus distance : 0.30m/11.81 inch, F2.8 maximum aperture; F22 minimum
Stepper-type AF motor with full-time manual focusing
52mm filters, Lens Construction: 15 elements in 12 groups
Focal Length & Maximum Aperture: 100mm 1:2.8
Focus Adjustment: Inner focusing system with USM; full-time manual focus available
Lens Construction: 15 elements in 12 groups

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