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Feature

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.

Description

A unique and indispensable addition to Canons series of EF lenses, the new EF 40mm f/2.8 STM offers an ultra-slim and lightweight design. Incredibly compact in size, the EF 40mm f/2.8 STM delivers high image quality from the center to the periphery thanks to its advanced lens configuration including an aspherical element, a bright 2.8 aperture, and optimized coatings that minimize ghosting and flare while providing exceptional color balance. The EF 40mm f/2.8 STMs unobtrusive design helps the photographer avoid overwhelming their subjects with a large lens and to remain discreet in sensitive shooting situations with no compromise in performance. Its diminutive design is complemented by features such as a newly developed stepping motor for smooth and quiet continuous AF while capturing video with the Canon EOS Rebel T4i DSLR, a circular aperture (7 blades) for beautiful soft-focus backgrounds, and a short minimum focusing distance of only 0.98 ft./0.30 m.1-Year Warranty