Sigma has announced that five of its Sony E-Mount Art-series primes, announced earlier this year, are now shipping. The 20mm F1.4 DG HSM, Sigma 24mm F1.4 DG HSM, Sigma 35mm F1.4 DG HSM, Sigma 50mm F1.4 DG HSM and 85mm F1.4 DG HSM are designed for Sony's full-frame a7-series and a9 mirrorless interchangeable lens cameras.

The E-Mount version of Sigma's 14mm F1.4 DG HSM (shown above, in prototype form) is expected later this summer, along with E-Mount versions of the recently-announced 70mm F2.8 Macro, and the 105mm and 135mm Art-series telephotos.

Optically the E-mount primes are unchanged compared to their DSLR-mount predecessors but are compatible with high-speed continuous autofocus and should offer faster data throughput compared to using a DSLR-mount version with an adapter. This should improve autofocus speed across the board, compared to using a DSLR-mount version with an adapter - something we hope to test for ourselves in the coming weeks.

Press release:

Sigma Ships Five Prime Art Lenses for Sony E-mount Cameras with Full-Frame Sensors

Ronkonkoma, NY – June 19, 2018 – Sigma Corporation of America, a leading still photo and cinema lens, camera, flash and accessory manufacturer, today announced availability of five of its interchangeable Art prime lenses for Sony E-mount camera systems – Sigma 20mm F1.4 DG HSM ($899 USD), Sigma 24mm F1.4 DG HSM ($849 USD), Sigma 35mm F1.4 DG HSM ($899 USD), Sigma 50mm F1.4 DG HSM ($949 USD) and Sigma 85mm F1.4 DG HSM ($1199 USD).

Offering the same high-performance optical design as other lenses in the Art line, the new Sony E-mount models feature a newly developed control algorithm that optimizes the autofocus drive and maximizes the data transmission speed. In addition, these lenses are compatible with Sony’s Continuous AF (AF-C) and high-speed autofocus, which are not addressed by Sigma Mount Converter MC-11. Like MC-11, the lenses are compatible with in-camera image stabilization and in-camera lens aberration correction, which includes corrections for peripheral illumination, chromatic aberrations and distortion.

Key Features and Benefits

Autofocus Tuned for Each Lens

Thanks to an autofocus drive control program tuned for each lens and high-speed data transmission, the lenses offer a high-speed autofocus at the same performance level as that of a lens designed exclusively for mirrorless cameras. In particular, in E-mount cameras offering Sony’s Fast Hybrid AF, AF-C mode delivers exceptional subject following performance. Autofocus remains
extremely precise even in those E-mount cameras offering only contrast AF.

Compatible with In-Camera Image Stabilization

The lenses are compatible with in-camera image stabilization. The Sony E-mount camera senses the focal length of the lens and automatically optimizes image stabilization performance.

Data Loaded for Compatibility with In-Camera Aberration Correction

The lenses are fully compatible with in-camera aberration correction, which includes corrections for peripheral illumination, chromatic aberrations and distortion. By matching corrections to the optical characteristics of the lens, this function takes image quality to an even higher level.

Native Mount for a More Rigid and Stable Feel

Making the mount native to the lens means a more rigid and stable feel to the lens. Featuring a special surface treatment to enhance strength, the brass bayonet mount offers a high-precision fit and exceptional durability. The mount connection area incorporates rubber sealing for dust- and splash-proof construction.

Available Mount Conversion Service*

This service converts the mount of Sigma lenses to that of a different camera body, allowing photographers to continue using their favorite lenses over the long term regardless of camera system.

*The Mount Conversion Service is different from a normal repair. In order to apply for the service, please contact your nearest authorized Sigma subsidiary or distributor: http://www.sigma-global.com/en/about/world-network/.

**This service is performed exclusively by Sigma.