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The Nikon F mount 20mm f/1.4 DG HSM Lens is a member of the venerable Art series of Global Vision lenses from Sigma and pairs a sophisticated optical design with a robust physical construction. Comprised of 15 elements in 11 groups, the lens design includes two "F" Low Dispersion (FLD) elements, five Special Low Dispersion (SLD) elements, and two aspherical elements to significantly reduce chromatic and spherical aberrations, as well as limit distortion for clean, sharp and evenly illuminated imagery. A Super Multi-Layer Coating has also been applied to minimize surface reflections, flare, and ghosting for increased contrast and color accuracy. The optical performance is an equally adept Hyper Sonic Motor, which provides fast, smooth, and near-silent autofocus performance. This focusing motor also enables full-time manual focus override at any time just by rotating the focus ring for refined manual control and focusing as close as 10.9". The lens barrel is constructed using a Thermally Stable Composite material, which supports working in a wide variety of temperatures and conditions, and the lens mount is constructed from brass for long-term durability and mounting accuracy.
As part of the Art line within Sigma's Global Vision series, this lens' is designed to achieve truly notable optical performance and is ideally suited for creative and artistic applications. Prime wide-angle 20mm f/1.4 lens is designed for FX format Nikon F mount DSLRs, and can also be used with DX models where it will provide a 30mm equivalent focal length. Fast f/1.4 maximum aperture is well-suited for working in low-light conditions and also provides greater control over the focus position when using shallow depth of field techniques. Two FLD, five SLD, and two aspherical elements have been incorporated within the lens design to correct for chromatic aberrations throughout the entire focusing range and help to ensure high image sharpness and clarity. A fixed petal-shaped lens hood helps to reduce lens flare when working in strong lighting conditions and also offers some protection to the front element of the lens. This lens is compatible with the optional Sigma USB Dock for fine-tuning different lens characteristics and updating its firmware.
Sigma 20mm F/1.4 DG HSM Art Specs
|Lens Mount||Nikon F|
|Lens Format Coverage||Full-Frame|
|Angle of View||94.5°|
|Minimum Focus Distance||10.9" / 27.69 cm|
|Optical Design||15 Elements in 11 Groups|
|Diaphragm Blades||9, Rounded|
|Dimensions (ø x L)||3.57 x 5.11" / 90.7 x 129.8 mm|
|Weight||2.09 lb / 950 g|
Sigma 20mm F1.4 DG HSM Art (Nikon)
Cover Lens Cap
Sigma Rear Lens Cap
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