Sigma 50-100mm f1.8 DC HSM Art Lens for Canon EF

Focal Length	50 to 100mm (35mm Equivalent Focal Length: 80 to 160mm)
Maximum Aperture	f/1.8
Minimum Aperture	f/16
Lens Mount	Canon EF
Format Compatibility	APS-C
Angle of View	31.7° to 16.2°
Minimum Focus Distance	3.12' / 95 cm
Maximum Magnification	0.15x
Optical Design	21 Elements in 15 Groups
Diaphragm Blades	9, Rounded
Focus Type	Autofocus
Image Stabilization	None
Tripod Collar	Fixed and Rotating
Filter Size	82 mm (Front)
Dimensions (ø x L)	3.68 x 6.72" / 93.5 x 170.7 mm
Weight	3.28 lb / 1490 g

Pairing a useful range of telephoto focal lengths with an especially fast design, this Canon EF-mount Sigma 50-100mm f/1.8 DC HSM is an Art-series zoom mixing impressive versatility with advanced optics. The bright f/1.8 constant maximum aperture offers consistent low-light performance throughout the zoom range and also affords greater control over focus placement for shallow depth of field and selective focus applications. The optical design incorporates a series of low dispersion and high-refractive index elements, which help to achieve high clarity and sharpness by suppressing various aberrations, color fringing, and distortion. A Super Multi-Layer Coating has been applied, too, which controls lens flare and ghosting for improved contrast and color accuracy. Balancing the optical merits, this 50-100mm also sports an advanced Hyper Sonic Motor, along with an internal focusing and zoom design, to promote fast, quiet, and precise autofocus performance. Additionally, a tripod collar is integrated into the lens's design for greater stability when working atop a tripod or monopod.