Quick focus, sharp photos, great lens for mid range. Speedy delivery.

I really like this lens. It is my first "professional" grade lens and I am VERY impressed. The sharpness of my photos is a magnitude above that of the kit lens for my Canon T3i. Photos taken with this lens are tack sharp! I read some reviews stating that at F2.8 there is softness at the edges.

Much Cheaper Than L Glass; Quick Focus; Very sharp

Heavy; Large; Not For Full Frame Camera

At first glance, the new Sigma 50-150mm f/2.8 EX DC ($680, street) appears to possess an unusual focal length range. But when you do the math, multiplying by a 35mm lens-conversion factor of 1.4X, it becomes a more familiar-sounding 70-210mm equivalent.

I would like to complete a full Sigma 50-150mm f/2.8 EX DC OS HSM Lens review in the future.

Technical Specifications Lens Construction: 18 Elements in 14 Groups Angle of View: 27.9 ° - 9.5 ° Number of Diaphragm Blades: 9 Blades Minimum Aperture: F22 Minimum Focusing Distance: 100cm / 39.4 inches Maximum Magnification:...

Gary Wolstenholme reviews the bright telephoto zoom from Sigma, the Sigma 50-150mm f/2.8 EX DC APO OS HSM lens.

Excellent sharpness in the centre throughout the zoom range; Good build quality; Constant f/2.8 maximum aperture; Effective optical stabilisation; Good value for money

Performance towards the edges at maximum aperture could be improved; No weather sealing

So which lens you should choose? Sigma 70-200 f/2.8 or Sigma 50-150 f/2.8? First one has better optical performance, especially on APS-C/DX matrix. Astigmatism, vignetting and distortion are well controlled which is not in case of 50-150 model. But all in all advantage of 70-200 is not that big.

poor image quality at the edge for 150 mm; chromatic abberation should be smaller in APO lens; noticable astigmatism for focal length range from 100 to 150 mm; clear vignetting especially at 150 mm; significant front-focus with Canon 20D

I used to be an owner of a Sigma 50-150mm f2.8, before i got Tokina 50-135mm f2.8. Sigma had problems with front focusing, so i sent it back to service. They somehow managed to adjust the focusing, but after using it for a year I sold it, because the image quality of Sigma 50-150mm f2.8 was not...

HSM motor; EX built quality

focusing issues; image quality is just average

The new Sigma APO 50–150mm F2.8 EX DC OS HSM designed especially for APS-C size image sensors is a fast f/2.8 telephoto zoom lens with a focal length equivalent to 75–225mm in 35mm format. Un-boxing it you have the well-padded sturdy case that comes with every Sigma lens in this range.

Fixed f/2.8 aperture; Four stops OS; Pro focal range; Lightweight for a telephoto

Too large for most hobbyists; Only for crop sensor; Vignetting

This telephoto zoom lens for use with APS-C format cameras offers a 3x zoom range equivalent to a 75-225mm lens used on a 35mm camera, a fast constant f/2.8 maximum aperture, silent autofocus and optical stabilisation.