• Equipped with the latest in lens technology, the 30mm 1.4 lens boasts a Hyper Sonic Motor (HSM), Super Multi-Layer Coating and a design featuring Thermally Stable Composite Material (TSC)..
• The HSM ensures quiet, accurate and high-speed autofocus; the Super Multi-Layer Coating reduces flare and ghosting, while the TSC reduces expansion and contraction of the internal lens barrel.
• A rear focus system prevents focus-dependent variation in aberration, making high-level image quality possible throughout the entire image. With their unchanging barrel length.

Placed in the Art line, this large-aperture standard lens with an angle of view equivalent to 45mm on a 35mm camera is a superb go-to lens for artistic photography on an APS-C format digital SLR. Offering the bright F1.4 aperture and an angle of view extremely close to that of human vision, this lens is ideal for many different types of photography. Equipped with the latest in lens technology, the 30mm 1.4 lens Art boasts a Hyper Sonic Motor (HSM), Super Multi-Layer Coating and a design featuring Thermally Stable Composite Material (TSC). The HSM ensures quiet, accurate and high-speed autofocus; the Super Multi-Layer Coating reduces flare and ghosting, while the TSC reduces expansion and contraction of the internal lens barrel. A rear focus system prevents focus-dependent variation in aberration, making high-level image quality possible throughout the entire image. With their unchanging barrel length, these lenses also enhance balance and stability for the photographer. An optimized autofocus algorithm achieves smooth focusing while a 9 blade rounded diaphragm creates beautiful bokeh.Specifications Lens Construction: 9 Elements in 8 Groups Angle of View: 50.7 Minimum Focusing Distance: 30 cm / 11.8 in Diaphragm Blades: 9 Minimum Aperture: f16 Filter Size (mm): 62mm Maximum Magnifications: 1:6.8 Dimensions: 2.9 x 2.5 in Weight: 435g/ 15.3 ozIncluded Items Sigma 30mm F1.4 DC HSM | A Sigma 4-Year USA Warranty Sigma Lens Case Sigma Lens Hood Sigma Front / Rear Lens Caps. Lens Compatability: ist D, ist DS, ist DS2, ist DL, ist DL2, KP, K-m, K-r, K-S1, K-S2, K-x, K-1, K-3, K-3Ⅱ, K-5, K-5 II / K-5IIs, K-7, K-30, K-50, K-70, K10D, K20D, K100D / K110D, K100D Super, K200D AF is not available: ist D, ist DS, ist DS2, ist DL, ist DL2, K100D / K110D Please switch change the angle of view when using full frame, as vignetting will occur: K-1 Please update the firmware of the camera to the newest version before using this product: K10D