Sigma has released details of its 20mm and 24mm f/1.4 DG DN | Art lenses, which are available for Sony E and L-Mount cameras and scheduled for worldwide release in late August.

The new Sigma 20mm f/1.4 DG DN | Art lens. (Source: Sigma Camera.)

Providing a 94.5-degrere angle of view on fuill-frame cameras, the Sigma 20mm f/1.4 DG DN | Art lens is ideal for landscape photography and photographing the night sky. Its optical design consists of 17 elements in 15 groups and includes two Super-Low Dispersion (SLD) elements and three aspherical elements, one of them a double-side aspherical lens that facilitates superior performance across the image frame. The minimum focus is 23 cm. A dedicated switch is provided for de-clicking the aperture ring when required. To cater for astro-photography, this lens includes a Lens Heater Retainer to reduce the build-up of condensation when the camera is taken from a warm bag to face the cold night sky by preventing lens heaters from becoming dislodged.  This lens is listed at US$899 MSRP. Click here for full details.

The new Sigma 24mm f/1.4 DG DN | Art lens. (Source: Sigma Camera.)

The 24mm f/1.4 DG DN | Art lens builds on the legacy of its predecessor, offering improved edge-to-edge sharpness, enhanced portability and useful features like a de-clickable aperture ring. Encompassing an angle of view with minimum distortion, it is suitable for landscape, astro, architectural, street and wedding photographers as well as filmmakers and vloggers. A new Manual Focus Lock allows users to set focus manually and lock it in place for time-lapse shooting or very long exposures. This lens also sports a Rear Filter Holder to enable use of rear-mounted filters for various effects without causing distortion or vignetting.

Both lenses are scheduled for release late this month. They are dust and splash-resistant with water- and oil-repellent coatings on their front elements to allow shoots in harsher environments. Eleven-bladed iris diaphragms provide smooth bokeh at wide apertures and complex sunstars when stopped down to the minimum aperture of f/16.  Filmmakers will welcome the fast yet silent internal focusing driven by a stepping motor which is compatible with the AF-assist functions in Sony’s cameras and de-clickable aperture rings. Sigma lists the MSRP of this lens as US$799. Click here for full details.