The Canon EF 40mm f/2.8 STM is an ultra compact prime lens for Canon EF DSLRs, and can be used with APS-C system providing 64mm equivalent focal length in the 35mm format. Consisting of 6 elements in 4 groups including an aspherical element that reduces aberrations, this lens ensures premium picture quality from the center to the periphery of the frame, and the optimized coatings minimize ghosting and flare while providing exceptional color balance. A newly developed stepping motor built into this lens allows quiet and smooth continuous autofocus while capturing video (continuous video autofocus only when used with the Canon EOS Rebel T4i DSLR). A short minimum focusing distance of only 0.98 ft./0.30m makes it easy to take breathtaking macro shots. A circular seven-blade aperture produces beautiful soft-focus backgrounds. Best of all, with a diminutive pancake design, this lens will never draw unwelcome attention thus you can stay discreet in sensitive shooting situations.
MTF Charts
Compact Design
With a pancake design, this lens measures 22.8mm in depth and weighs mere 130g, allowing it to effortlessly fit into your kit bag, and stay unobtrusive while shooting.
Super Optical Performance
This lens comprises 6 elements in 4 groups, including one aspherical lens (AL) that reduces aberrations. Bright f/2.8 aperture allows you to shoot in nearly any lighting conditions. The premium lens coating ensures exceptional color balance while minimizing ghosting and flare.
Stepping Motor
The stepping motor allows for smooth and quiet continuous AF while capturing video with the Canon EOS Rebel T4i DSLR.
Circular Aperture
A circular aperture formed by seven diaphragm blades produce fantastic out-of-focus background effects.
