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AF-S NIKKOR 70-200mm f/2.8G ED VR II will be tested when
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Nikon AF-S Nikkor 24-70mm f/2.8G ED bad Chr aberration results
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May 18
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Re: Sony A57
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Sigma 17-35mm F2.8-4 EX DG HSM - an old, cheap, and... great wide-angle lens!
DxOMark continues its exploration of the past with this very good wide-angle lens that Sigma first produced for Canon mounts in 2003, and while we’re at it, we’ll use this opportunity to compare it with one of the most best-known lenses on the market, the Canon EF 16-35mm f/2.8L II USM.
First of all, let’s take a look at the results for the Sigma lens by itself:
Sigma 17-35mm F2.8-4 EX DG Aspherical HSM Canon mounted on a Canon EOS 1Ds Mark III
With a DxO Mark Score of 20, this wide-angle zoom is indeed a good-quality lens.
| Strong points | Weak points |
| Good sharpness | Significant vignetting at maximum aperture |
| Good correction of chromatic aberration | Rather weak transmission |
| Very reasonable price | |
| An acceptable weight |
Comparison
Sigma 17-35mm F2.8-4 EX DG Aspherical HSM Canon vs Canon EF 16-35mm f/2.8L II USM mounted on a Canon EOS 1Ds Mark III
Both lenses achieve the same DxOMark overall score of 20. When looking at the results a bit more closely, the Sigma’s quality seems actually somewhat lower (see also the DxOMark score map).
In fact, the Sigma’s performance drops off a bit for the greatest focal lengths (starting at 28 mm), due to the fact that the Sigma doesn’t maintain a constant f/2.8. To compensate for the loss of brightness, one must augment the ISO sensitivity - and consequently, noise goes up as well.
Sigma 17-35mm F2.8-4 EX DG Aspherical HSM Canon
| The advantages | The disadvantages |
| Homogenous sharpness in the field at maximum aperture | An aperture that varies depending on the focal length |
| Good correction of chromatic aberrations | Very heterogenous optical quality |
| A truly affordable lens in terms of price |
Canon EF 16-35mm f/2.8L II USM
| The advantages | The disadvantages |
| Homogenous optical quality | Good sharpness only in the first third of the field |
| With a constant aperture, the Canon is brighter | Very strong chromatic aberrations chromatiques in the corners at 16mm |
| High price |
Conclusion
The Sigma 17-35mm F2.8-4 EX DG Aspherical HSM Canon is a very good lens for the price. While each lens has its strong and weak points, the Sigma quite frankly manages to hold its own against its pricier Canon rival.
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