About the Sigma 30mm F1.4 DC DN Contemporary Canon M-Mount

A truly versatile slightly-longer-than-normal prime, this 30mm lens is mirrorless cameras where it provides a 60mm equivalent focal length.
Fast f/1.4 maximum aperture excels in low-light conditions and also affords greater focus control for producing shallow depth of field effects.
One aspherical element and one double-sided aspherical element control a range of spherical aberrations and distortions for increased sharpness and resolution. Additionally, a high-refractive index, high-dispersion glass element is also integrated into the design and offers anomalous partial dispersion characteristics to control chromatic aberrations and reduce color fringing.
A Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and colour-neutral imagery, even in backlit conditions.
A stepping AF motor benefits both photographers and videographers with its fast, precise, and near-silent performance.
A rounded nine-blade diaphragm contributes to a pleasing bokeh quality.
The lens is constructed using a Thermally Stable Composite (TSC) material, along with traditional metals, for greater precision and use in wide temperature variations. The outside of the lens barrel is also engraved with the year of production.
The bayonet mount is constructed from brass for ensured accuracy and durability.

Focal Length	30mm (35mm Equivalent Focal Length: 48mm)
Maximum Aperture	f/1.4
Minimum Aperture	f/16
Lens Mount	Canon EF-M
Format Compatibility	APS-C
Angle of View	50.7°
Maximum Magnification	0.14x
Minimum Focus Distance	11.81" / 30 cm
Optical Design	9 Elements in 7 Groups
Diaphragm Blades	9, Rounded
Focus Type	Autofocus
Image Stabilization	None
Filter Size	52 mm (Front)
Dimensions (ø x L)	2.55 x 2.89" / 64.8 x 73.3 mm
Weight	9.35 oz / 265 g