January 10, 2012. Sigma has announced two new lens for Micro Four Thirds (MFT) and Sony NEX system users. The lens are Sigma 30mm f/2.8 EX DN and Sigma 19mm f/2.8 EX DN featuring a newly developed linear AF motor that moving the lens elements directly without the need for gears or the drive of other mechanical parts. The lens are comes with a Super Multi-Layer Coating which is able to reduce the flare and ghosting and provides sharp and high contrast images even at the maximum aperture. The price and and availability of these lens have yet to be announced.
The Sigma 30mm f/2.8 EX DN has construction consists of 7 elements in 5 groups and an iris diaphragm with 7 rounded blades to make an attractive blur to the out of focus areas of the image. It also offers an angle of view of 39.6 degrees on MFT and 50.7 degrees on an E-mount camera make the lens equivalent to a 60mm on the MFT system and a 45mm lens on the E-mount system.
The lens has Two glass mold aspherical lenses, including a double-sided aspherical lens which delivers excellent correction for all types of aberration. While the AF motor system ensures accurate and quiet autofocusing, make the lens is perfect choice not only for still photos but also for video recording. In addition, the Sigma 30mm f/2.8 EX DN has minimum focusing distance of 30cm/11.8in and a maximum magnification ratio of 1:8.1.
The Sigma 19mm f/2.8 EX DN has construction consists of 8 elements in 6 groups and a rounded 7 blade diaphragm to create an attractive blur to the out of focus areas of the image. It has equivalent angle of view as a 38mm (35mm equivalent focal length) on the MFT systems and 28.5mm (35mm equivalent focal length) on the E-mount systems.
The lens has three glass mold aspherical lenses to provide excellent correction for distortion, color aberration and field curvature. Comes with AF motor system, the lens gives an accurate and quiet autofocusing on the still images shooting even in video recording. Additionally, The lens has a minimum focusing distance of 20cm/7.9in and a maximum magnification ratio of 1:7.4.