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Sigma 17-50mm f/2.8 EX DC OS HSM
83 PixelMeter Score 15 reviews

Pros Pros
  • Excellent center sharpness and overall image quality
  • Fast and quiet autofocus performance
  • High value with a constant f/2.8 aperture
  • Compact and lightweight design
  • Effective optical stabilization
Cons Cons
  • Lack of full-time manual focus and rotating focus ring
  • Softness and performance drop-off at the edges
  • Heavy and bulky physical profile
  • Inconsistent focus accuracy
  • Noticeable chromatic aberration

Launch price Launch price $670
Focal length & aperture Focal length & aperture 17-50mm f/2.8
Mount & coverage Mount & coverage Canon EF, Nikon F, Pentax K, Sigma SA, Sony A · APS-C
Stabilization Stabilization Optical IS
Close focus Close focus 28 cm (0.2x)
Filter thread Filter thread 77mm
Weight & size Weight & size 565g (1 lb 3.9 oz) · 83.5 x 91.8 mm (3.29 x 3.61 in)

Announcement date Announcement date February 20, 2010
Launch MSRP Launch MSRP $670
Lens mount Lens mount Canon EF, Nikon F, Pentax K, Sigma SA, Sony A
Image circle coverage Image circle coverage APS-C
Lens line / series Lens line / series EX

Elements Elements 17
Groups Groups 13

Focal length (wide) Focal length (wide) 17mm
Focal length (tele) Focal length (tele) 50mm
Max aperture Max aperture f/2.8
Minimum aperture Minimum aperture f/22
Diaphragm blades Diaphragm blades 7

Diagonal angle of view Diagonal angle of view 79.7° - 31.7°

Minimum focus distance Minimum focus distance 28 cm
Maximum magnification Maximum magnification 0.2x

Optical stabilization (OIS) Optical stabilization (OIS) Yes

Weight Weight 565g (1 lb 3.9 oz)
Maximum diameter Maximum diameter 83.5mm (3.29 in)
Length Length 91.8mm (3.61 in)
Filter thread Filter thread 77mm
Weather sealing Weather sealing None

Lens hood Lens hood LH825-03 petal, included