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The EF 28mm f/2.8 IS USM Lens from Canon pairs the wide-angle focal length with sophisticated autofocus capabilities as well as image stabilization. The optical design utilizes one aspherical element to reduce spherical aberrations and distortion for high sharpness, and a Super Spectra coating has also been applied to suppress flare and ghosting for increased contrast and color accuracy. Also, a ring-type USM realizes quick, quiet, and smooth autofocus performance along with full-time manual focus override.Bright f/2.8 maximum aperture benefits working in low-light conditions and also permits working with shallow depth of field techniques.Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.A ring-type Ultrasonic Motor (USM) is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.
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