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The Canon EF 35mm f/1.4L II USM is a wide-angle L-series prime featuring a fast f/1.4 maximum aperture to suit working in difficult lighting conditions. Its optical design incorporates a Blue Spectrum Refractive Optics element; a specially developed element that helps to nearly eliminate chromatic aberrations and color fringing for notable clarity and color accuracy. Individual elements also feature a Sub Wavelength Coating to suppress flare and ghosting for high contrast and color fidelity when working in harsh and backlit conditions.Its durable physical construction is dust- and moisture-sealed, and a fluorine coating has been added to the exposed elements to guard against fingerprints and smudging.Fast f/1.4 maximum aperture benefits working in low-light conditions and also affords significant control over depth of field for working with selective focus techniques.A pair of aspherical elements and one UD element also help to control aberrations and distortions for sharper, clearer image quality.A ring-type Ultrasonic Motor (USM) is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.Rounded nine-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.
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