SIGMA has announced its new 20mm F1.4 DG DN ART and 24mm F1.4 DG DN ART lenses for mirrorless full-frame camera systems that are available in Sony E-Mount and Leica L-Mount versions.
SIGMA 20mm F1.4 DG DN
The SIGMA 20mm f/1.4 DG DN Art Lens features a large maximum aperture and wide focal length when used on a full-frame camera. This makes it a good option for use in low-light environments, however, with the very good high ISO performance of a lot of modern-day Sony mirrorless hybrids, having an F1.4 aperture is arguably not as big of an advantage as it used to be.
Key features
- Aperture Range: f/1.4 to f/16
- Two SLD Elements
- Three Aspherical Elements
- Super Multilayer Coating
- Stepping AF Motor, MFL Switch
- Rounded 11-Blade Diaphragm
- 82mm Front Filter Thread
- Rear Filter Holder
- Durable Brass Bayonet Mount
The lens features a new Manual Focus Lock (MFL) switch that disables the focus ring as well as the ability to accept 82mm front filters. SIGMA has also given the lens a rear filter holder, which accommodates sheet filters for various creative effects.
The optical design of the lens consists of 17 glass elements arranged in 15 groups, including two SLD, three aspherical glass elements, and the largest class double-sided aspherical glass element in SIGMA’s history. The 20mm is also claimed to suppress various optical aberrations such as sagittal coma flare or image distortion to produce highly-detailed images with exceptional sharpness and accuracy from the center to the furthest corners.
Specifications
- Lens Construction: 15 groups, 17 elements (2 SLD, 3 aspherical elements)
- Angle of view: 94.5°
- Number of diaphragm blades: 11 (rounded diaphragm)
- Minimum aperture: F16
- Minimum focusing distance: 23cm / 9.1 in.
- Maximum magnification ratio: 1:6.1
- Filter size: 82mm
- Dimensions (Max. Diam. x Length): 87.8 x 111.2mm / 3.5 x 4.4 in.
- Weight: 635g / 22.4 oz.
SIGMA 24mm F1.4 DG DN ART
The SIGMA 24mm F1.4 DG DN ART‘s optical design consists of 17 elements in 14 groups, including two FLD, one SLD and four aspherical glass elements. The successful suppression of optical aberrations such as sagittal coma flare. The use of Super Multi-Layer Coating and Nano Porous Coating (NPC) is claimed to allow the 24mm F1.4 DG DN | Art to render clean and accurate images in any situation.
Key features
- Aperture Range: f/1.4 to f/16
- Two FLD Elements and One SLD Elements
- Four Aspherical Elements
- Super Multilayer Coating
- STM Autofocus Motor
- Rounded 11-Blade Diaphragm
- Brass Bayonet Mount
- 72mm Front Filter Threads
- Rear Filter Holder
The lens accepts standard 72mm filters and it also features a rear filter holder that accommodates sheet-type filter material, often used by astrophotographers for specific effects.
Just like the 20mm F1.4, it also has a Manual Focus Lock (MFL) switch that disables the focus ring. There is an aperture ring click switch, aperture lock switch, and a lens hood.
Price & availability
The Sigma 20mm f/1.4 DG DN Art Lens retails for $899 USD. The SIGMA 24mm F1.4 DG DN ART retails for $799 USD and it should be shipping soon.
