Sigma 17-50mm f2.8 EX DC HSM - Lens

Autofocus mid-range zoom lens made for Pentax K mount SLRs by Sigma starting in 2011. It is designed for APS-C-sized sensors and gives the equivalent field of view to a 25.5-75mm lens on full frame/35mm. This version has no image stabilization (OS) and was made for Sony A and Pentax K SLRs, most of which had sensor-based image stabilization at the time of its release. Has a super multi-layer coating that reduces lens flare and ghosting. Uses a hypersonic motor (HSM) for autofocus. Plastic & metal body available in black.

• Sigma 17-50mm f2.8 EX DC HSM (17 elements, 13 groups)
• Minimum focus distance: 0.28m
• Aperture blades: 7
• Size: 102 x 84 mm
• Weight: 560g