The Canon EF 40mm f/2.8 STM Pancake Lens is 2.29cm long, and it offers a bright f/2.8 maximum aperture allows you to shoot under pretty much any lighting conditions, and the sophisticated lens configuration, including one aspherical element, guarantees high image quality from the center to the edge of the frame. The optimized coatings used in constructing the lens greatly reduce ghosting and flare, and deliver superb color balance.
STM functionality provides quiet, smooth and continuous autofocus during video operation. The circular aperture formed by 7 diaphragm blades combined with the wide aperture can give you beautiful bokeh. This 40mm lens will give you a view equivalent to 64mm when used on a camera with an APS-C sensor, and is able to focus as close as 30cm. If you're looking for a "normal", everyday lens, this is a great place to start.
- Newly developed STM technology for smooth and quiet continuous AF while shooting video. - Lightweight and unobtrusive 130g lens - Bright f/2.8 aperture for shooting under all light conditions - High image quality from the center to the periphery - aspherical element - Optimized coatings that minimize ghosting and flare while providing exceptional color balance - A circular aperture (7 blades) for beautiful soft-focus backgrounds - Short minimum focusing distance of only 30cm - 64mm focal in 35mm format