Redesigned with a metal exterior under the Art category, this high-performance standard lens is designed exclusively for mirrorless interchangeable lens cameras and has the equivalent angle of view as a 60mm lens (35mm equivalent focal length) on the Micro Four Thirds systems and 45mm (35mm equivalent focal length) on the E-mount system. 
Two glass mold aspherical lenses, including a double-sided aspherical lens, provide excellent correction for all types of aberration. The inner focusing system corrects the fluctuation of aberration to maintain image quality regardless of the focal distance. Sigma’s Super Multi-Layer Coating reduces flare and ghosting as well as provides sharp and high contrast images even at the maximum aperture.
The superior telecentric optical design improves the image quality throughout the frame. The optical design also allows the lens to be compact and lightweight. This lens benefits from a newly developed linear AF motor, which moves the lens elements directly without the need for gears or the drive of other mechanical parts.
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This system ensures accurate and quiet autofocusing, making the lens suitable for video recording as well as still photos. The lens features a rounded 7-blade diaphragm creating an attractive blur to the out of focus areas of the image. This Sigma 30mm F2.8 DN has a minimum focusing distance of 30cm/11.8in and a maximum magnification ratio of 1:8.1, and comes in either a silver or black finish. LENS CONSTRUCTION SPECIFICATIONS Lens Construction 7 elements in 5 groups Angle of View 39.6 degrees (Sony E-mount 50.7 degrees) Number of Diaphragm Blades 7 (Rounded) Mininum Aperture f22 Minimum Focusing Distance 30cm / 11.8in Filter Size (mm) 46 Maximum Magnifications 1：8.1 Dimensions (Diameter x Length) 60.8mm x 40.5mm / 2.4in x 1.6in Weight 140g /4.9oz Corresponding Mounts Micro FourThirds DN Sony E-mount DN DN- Designed exclusively for mirrorless interchangeable lenses * The appearance, specifications, and the like of the product are subject to change for improvement without notice.
• FOCAL LENGTH SIMULATOR The focal length changes the angle of view in an image. The longer the focal length, the smaller the angle of view and the greater the magnification. • SIGMA LENS TECHNOLOGY Learn about the state of the art technology put into Sigma lenses to ensure high quality images. • LENS TELECONVERTER COMPATIBILITY CHART Get more reach with what you have. Check the compatibility of your lens with the teleconverter chart. • LENS CHART Need more information on a lens?
Cross reference all the specs using the lens chart. • LENS COMPATIBILITY CHART Check the compatibility of lenses with your camera make and model. • LENS CHART FOR RECENTLY DISCONTINUED LENSES Get all the information you need on discontinued lenses. • MTF CHART GUIDE See how a lens performed using the Modulation Transfer Function (MTF) Chart Guide. The MTF is just one criterion used to evaluate lens performance.