Sigma 20mm f/1.4 DG HSM Art Lens for Canon EF

The Sigma 20mm f/1.4 DG HSM Lens for Canon EF mount is a remarkable member of the esteemed Art series within Sigma’s Global Vision line. It combines an advanced optical design with a durable physical construction. With a total of 15 elements arranged in 11 groups, including two “F” Low Dispersion (FLD) elements, five Special Low Dispersion (SLD) elements, and two aspherical elements, this lens effectively reduces chromatic and spherical aberrations while controlling distortion. A Super Multi-Layer Coating is also applied to minimize reflections, flare, and ghosting, resulting in enhanced contrast and color accuracy. The wide focal length and consistent image quality make it an excellent choice for landscape, interior, architectural, and astrophotography, while the fast f/1.4 aperture makes it ideal for low-light and natural shooting.

The lens features a highly capable Hyper Sonic Motor (HSM) that delivers fast, smooth, and nearly silent autofocus performance. It also allows full-time manual focus override by simply rotating the focus ring, providing precise manual control even as close as 10.9 inches. The lens barrel is constructed with Thermally Stable Composite material, enabling reliable performance in various temperatures and conditions, and the brass lens mount ensures long-term durability and precise mounting accuracy. Additionally, the lens is compatible with the Sigma USB Dock for fine-tuning autofocus parameters and other lens characteristics.

As part of the Art line within Sigma’s Global Vision series, this lens is designed to deliver exceptional optical performance and is ideally suited for creative and artistic applications.

Key Features:
– Wide-angle prime lens with a focal length of 20mm and a fast f/1.4 maximum aperture, designed for full-frame Canon EF mount DSLRs. It can also be used with APS-C models, providing a 32mm equivalent focal length.
– The fast f/1.4 aperture excels in low-light conditions and offers greater control over focus position for achieving shallow depth of field effects.
– Incorporates two FLD, five SLD, and two aspherical elements to correct chromatic aberrations, ensuring high image sharpness, clarity, and contrast across the entire focus range and aperture settings. This optical design also controls distortion and vignetting.
– Super Multi-Layer Coating minimizes flare and ghosting, resulting in contrast-rich and color-neutral imagery, even in challenging backlit conditions.
– The integrated Hyper Sonic Motor (HSM) enables fast and quiet autofocus, complemented by an optimized AF algorithm for smoother performance. Full-time manual focus control is available by rotating the focus ring.
– A rounded nine-blade diaphragm produces pleasing out-of-focus backgrounds.
– Includes a fixed petal-shaped lens hood to reduce flare and protect the front element in strong lighting conditions.
– Constructed with a Thermally Stable Composite (TSC) material and traditional metals for precision and reliable operation in various temperature conditions.
– Brass bayonet mount ensures accuracy and durability.
– Compatible with the Sigma USB Dock for fine-tuning different lens characteristics and firmware updates.