Sigma 20mm f/1.4 DG HSM Art Lens for Canon EF
The Canon EF mount Sigma 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 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 wide focal length and consistent image quality make this lens especially suitable for landscape, interior, architectural, and astrophotography applications, while the fast f/1.4 maximum aperture deems it ideal for natural and low-light shooting.
Complementing the optical performance is an equally adept Hyper Sonic Motor, providing fast, smooth, and near-silent autofocus. 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 28 cm. 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 made from brass for long-term durability and mounting accuracy. This lens is also compatible with the optional Sigma USB Dock for fine-tuned control over focusing parameters and other lens characteristics.
Fast f/1.4 maximum aperture is well-suited for working in low-light conditions
A rounded nine-blade diaphragm helps to produce an attractive out-of-focus quality
Top-level performance for the ultra-high megapixel era
Specifications:
| Focal Length: | 20mm |
| Maximum Aperture: | f/1.4 |
| Minimum Aperture: | f/16 |
| Lens Mount: | Canon EF |
| Lens Format Coverage: | Full-Frame |
| The angle of View: | 94.5° |
| Minimum Focus Distance: | 10.9" / 27.69 cm |
| Maximum Magnification: | 0.14x |
| Optical Design: | 15 Elements in 11 Groups |
| Diaphragm Blades: | 9, Rounded |
| Focus Type: | Autofocus |
| Image Stabilization: | No |
| Filter Size: | None |
| Dimensions (ø x L): | 3.57 x 5.11" / 90.7 x 129.8 mm |
| Weight: | 2.09 lb / 950 g |
