The30mm f/1.4 DC HSM Art Lens for CanonfromSigmais a prime lens designed for CanonAPS-C format cameras. Its 35mm focal length equivalent is 45mm which placesit in the category of standard focal length lenses. Withits particularly fast maximum aperture of f/1.4, the lens will perform very well in low light situations andprovides shallow depth of field focus. With updated optical configurations (9 elements in 8 groups), as well as rounded aperture blades, the lens delivers sharp detailand nice background bokeh. Its minimum focus distance is 11.8" (30 cm).
The lens optimized light distribution helps to minimize field curvature preventing a loss of image quality at the edges of photographsand itsdouble-sided aspherical lens element minimizes spherical distortion. A rear focusing system combined with a newly developed autofocus algorithmand Hyper Sonic Motor provide smooth and accurate autofocus. Fulltime manual focus is also supported.As part of Sigma's "Art" line of lenses it is compatible with Sigma's USB Dock, which enables firmware updates and focusing adjustments.