Sigma 70-200mm F28 Sports Dg Os Hsm Lens (Canon) Sigma Review
The Sigma APO lxx-200mm F2.viii EX DG OS HSM ($ane,259) is a less-expensive professional culling to similar lenses from Canon, Nikon, and Sony. The stabilized 70-200mm f/2.eight zoom is the go-to lens for many an event shooter, and getting one for nether $2,000 is an appealing prospect. For the well-nigh function, the Sigma 70-200mm delivers solid performance, but information technology doesn't offer the impeccable paradigm quality that you'll get from our Editors' Choice Canon EF 70-200mm f/2.8L IS II USM ($1,249.00 at Amazon) .
The APO lxx-200mm ($1,249.00 at Amazon) is bachelor for Canon, Nikon, Sigma, and Sony cameras, only because it'due south an older lens it's not available for the Sigma's mount conversion service. Information technology measures vii.8 past 3.four inches (HD) and is heavy at 3.ii pounds. There are a couple of toggle switches on the lens barrel: one to change between automatic and manual focus, and the other to conform the image stabilization mode. It can exist turned off, put in Mode 1 for standard shots, or put in Manner 2 for shots where the camera pans forth with a moving discipline during an exposure. The lens has a narrow manual focus ring and a wide zoom ring. Information technology includes both a hood and tripod collar, and its front element accepts 77mm filters.
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I used Imatest to check the sharpness of the 70-200mm when paired with the full-frame 36-megapixel Nikon D810 ($1,249.00 at Amazon) . At 70mm f/2.8 information technology scores ii,395 lines per picture acme on our standard center-weighted sharpness test, which is well in excess of the i,800 lines we apply to mark a photo every bit sharp. Merely edge performance suffers, with the sharpness dropping to 1,386 lines at the periphery of the frame, and at that place'due south strong (2.4 per centum) barrel distortion. Stopping down to f/four improves the center-weighted score to two,998 lines, and edges are a more respectable 1,628 lines. At f/v.six the lens is sharp from edge to edge, scoring 3,390 lines beyond the frame with edges that approach 2,400 lines. It's fifty-fifty amend at f/8—3,637 lines on average with edges that top 3,000 lines—and at f/eleven the overall sharpness score is but a little chip college, while edges meridian three,300 lines.
At 100mm the distortion goes abroad, and sharpness at f/2.8 improves to two,714 lines, but edge sharpness is notwithstanding a little weak at 1,640 lines. Stopping down to f/4 boosts the overall score to three,287 lines, with tack abrupt edges that show 2,231 lines. The lens just gets better equally you lot stop down: three,590 lines at f/v.vi, 3,711 lines at f/8, and 3,623 lines at f/eleven.
There's about 1 percentage pincushion distortion at 140mm, and the lens shows its sharpest results at f/2.8—3,003 lines using the eye-weighted metric with edges that fall merely shy of 2,700 lines. The lens gets ameliorate every bit the aperture is narrowed: 3,490 lines at f/iv, 3,629 lines at f/5.6, three,673 lines at f/8, and 3,569 lines at f/11.
Baloney stays steady at 200mm, but sharpness drops off dramatically. At 200mm f/2.8 the lens shows only 1,628 lines using our centre-weighted method, with edges that are just 1,030 lines. You'll desire to stop down to f/4 when zoomed all the way in if the lite allows it. That volition improve the overall score to 2,500 lines, but yous'll notwithstanding have to deal with fuzzy one,355-line edges. The overall sharpness is better at f/five.half-dozen (2,895 lines), merely edges only acuminate by about 100 lines. You lot'll need to ready the lens to a narrow aperture for the best performance—information technology'due south bully at f/viii (three,211 lines average, 2,103 lines at the edges) and at f/11 (3,370 lines boilerplate, 2,614 lines at the edges).
The Sigma APO 70-200mm F2.eight EX DG OS HSM isn't an optically perfect lens like our Editors' Choice Canon EF 70-200mm f/2.8L IS II USM, but information technology isn't nearly every bit expensive. If you lot're willing to cede some sharpness and distortion control in gild to save some money, though, it'southward a solid option. If you shoot with a Sony camera you lot'll also become images with more detail with the Sony 70-200mm f/2.viii ($1,249.00 at Amazon) , but we tin can't speak to Nikon shooters, as we've not nevertheless been able to get an AF-S Nikkor lxx-200mm f/2.8G ED VR II ($2,399.95) in for review. Some more recent Sigma lenses, like the excellent Sigma xviii-35mm F1.8 DC HSM ($1,249.00 at Amazon) for APS-C cameras have offered more performance than you'd expect for your dollar, but this Sigma zoom performs just in line with its budget-minded price point.
Sigma APO 70-200mm F2.8 EX DG Os HSM
Cons
The Bottom Line
The Sigma APO lxx-200mm F2.viii EX DG Bone HSM is a value option for professional shooters who want a stabilized f/2.viii telezoom.
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