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• Very good image quality in the frame centre,
• Splendid image quality on the edge of the frame for APS-C/DX and FF,
• Solid casing,
• Excellent chromatic aberration correction,
• Zero distortion,
• Very well-corrected coma,
• Slight astigmatism,
• Vignetting on smaller sensor not bothersome at all,
• Silent and quite accurate autofocus,
• Efficient image stabilization,
• Rich accessory kit (hood, case, tripod collar),
• Three-year long warranty period which can be extended by next two years.

Cons:

• Average work against bright light,
• Slow autofocus.

The summary can be only positive. The tested lens has a lot of serious advantages. The good quality of the image, kept on the same level across the frame, even near the maximum relative aperture, is especially worth your attention. Of course you shouldn’t forget about the excellent correction of coma, distortion or chromatic aberration. If you add good build quality to that, a long guarantee period and a rich accessory kit it really would be difficult to complain, especially that the disadvantages, listed by us, are of lesser calibre than most of advantages.

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However the price, reaching 1100 $, is quite another matter. Even taking into account the fact that it is a novelty on the market and it might go down in the future, it would be difficult to count on a price tag lower than 1000 $. From some time now the Sigma company has been giving a clear message that their products shouldn’t be considered any longer just cheaper substitutes of other brand name lenses but rather their fully-fledged rivals from the same price and quality segment. Partially it is justified by excellent result of the latest Sigma models, achieved in practice and in tests alike. In the case of the 150 mm OS model the price has been additionally increased because this lens doesn’t have any immediate competitors on the market - no other producer features a macro lens with such a focal length in its line-up, not to mention the stabilization which, for the Canon and Nikon reflex cameras’ owners, is a serious asset. Just because of it, especially in richer countries, the Sigma 150 mm OS can be a best-seller.

However, the launch of the 105 mm OS model, announced by Sigma not so long ago, will be the real verification of this company’s policy. That device, for a change, will face direct and very keen competition; despite that fact Sigma has already announced a price which wouldn’t put to shame even a more reputable producer. Fortunately the price and the properties of the 105 mm OS model can be discussed in more detail during its test which, we hope, will be published soon.

Sample shots

Camera: Nikon D3x Parameters: 150 mm, f/8.0, exp. 1/60 s, ISO 200 File: JPEG, 6048×4032 pix, 8.32 MB	Camera: Nikon D3x Parameters: 150 mm, f/16.0, exp. 1/15 s, ISO 200 File: JPEG, 6048×4032 pix, 7 MB	Camera: Nikon D3x Parameters: 150 mm, f/11.0, exp. 1/50 s, ISO 200 File: JPEG, 6048×4032 pix, 7.01 MB
Camera: Nikon D3x Parameters: 150 mm, f/11.0, exp. 1/50 s, ISO 200 File: JPEG, 6048×4032 pix, 8.13 MB	Camera: Nikon D3x Parameters: 150 mm, f/9.0, exp. 1/50 s, ISO 200 File: JPEG, 6048×4032 pix, 5.71 MB	Camera: Nikon D3x Parameters: 150 mm, f/13.0, exp. 1/30 s, ISO 200 File: JPEG, 6048×4032 pix, 5.88 MB
Camera: Nikon D3x Parameters: 150 mm, f/5.6, exp. 1/80 s, ISO 200 File: JPEG, 6048×4032 pix, 6.56 MB	Camera: Nikon D3x Parameters: 150 mm, f/16.0, exp. 1/13 s, ISO 200 File: JPEG, 6048×4032 pix, 6.93 MB	Camera: Nikon D3x Parameters: 150 mm, f/11.0, exp. 1/20 s, ISO 200 File: JPEG, 6048×4032 pix, 6.13 MB
Camera: Nikon D3x Parameters: 150 mm, f/5.6, exp. 1/800 s, ISO 400 File: JPEG, 6048×4032 pix, 8.87 MB	Camera: Nikon D3x Parameters: 150 mm, f/8.0, exp. 1/200 s, ISO 400 File: JPEG, 6048×4032 pix, 8.1 MB	Camera: Nikon D3x Parameters: 150 mm, f/11.0, exp. 1/200 s, ISO 400 File: JPEG, 6048×4032 pix, 8.71 MB
Camera: Nikon D3x Parameters: 150 mm, f/2.8, exp. 1/1600 s, ISO 100 File: JPEG, 6048×4032 pix, 9.84 MB	Camera: Nikon D3x Parameters: 150 mm, f/5.6, exp. 1/400 s, ISO 100 File: JPEG, 6048×4032 pix, 10.79 MB	Camera: Nikon D3x Parameters: 150 mm, f/2.8, exp. 1/1000 s, ISO 100 File: JPEG, 6048×4032 pix, 7.25 MB
Camera: Nikon D3x Parameters: 150 mm, f/4.0, exp. 1/640 s, ISO 100 File: JPEG, 6048×4032 pix, 7.39 MB	Camera: Nikon D3x Parameters: 150 mm, f/4.0, exp. 1/1000 s, ISO 100 File: JPEG, 6048×4032 pix, 8.38 MB	Camera: Nikon D3x Parameters: 150 mm, f/2.8, exp. 1/2500 s, ISO 100 File: JPEG, 6048×4032 pix, 8.79 MB