Prime focal length of 30mm (equivalent to 45mm on a 35mm format)
Fast maximum aperture of f/1.4
DC lens designed for the smaller image circle of APS-C DSLRs
Features HSM (Hyper-sonic Motor) technology
Super Multi-Layer Coating
Thermally Stable Composite (TSC)
Rear focusing system
9-blade circular aperture diaphragm
9 elements arranged in 8 groups
30mm f/1.4 DC HSM Prime Lens
30mm f/1.4 DC HSM Prime Lens has a 35mm focal length equivalent of 45mm and encompasses a number of features which makes this DC lens ideal for everyday photography situations. It has HSM (Hyper-sonic Motor) for super smooth auto focusing, Thermally Stable Composite (TSC) elements to counter the effects of extreme temperatures and consequent loss of optical quality and has a rear focusing mechanism. 9-blade aperture diaphragm and 9 elements arranged in 8 groups completes the construction.
Placed under the Art category, 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 DSLR. 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 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 achieves a smoother focusing. The 30mm 1.4 has a minimum focusing distance of 11.8in and a maximum magnification ratio of 1:6.8. A 9 blade rounded diaphragm creates beautiful bokeh. Under the Global Vision standard, every lens will be tested before shipping using the Sigma A1 MTF system to ensure the highest degree of quality possible.
9 Elements in 8 Groups
Angle of View
Number of Diaphragm Blades
Minimum Focusing Distance
30 cm / 11.8 in
Filter Size (mm)
(Diameter x Length)
435g / 15.3 oz.
Note: Nikon mount lenses do not have an aperture ring. Lens function may be limited with certain camera bodies.
*If the camera body does not support the hypersonic motor of the lens, auto focus will not be available.
* The appearance, specifications, and the like of the product are subject to change for improvement without notice.
Front & rear caps included.