Verdict
Pros
- Well priced and sturdy enough lens, full-frame imaging circle
Cons
- Image quality is not as good as some others
Key Specifications
- Review Price: £229
The DG moniker indicates that this is a full-frame compatible lens, while EX indicates that it is one of Sigma’s top marque lenses. The lens has an impressive maximum aperture of f/2.8, dropping to f/45 minimum (f/32 on Nikon or Pentax cameras). This is worth considering if you need maximum depth of field, because the closer you are to a subject, the shallower the depth of field. This is even more true with macro lens, so focus can fall off pretty quickly.
The lens is constructed from 10 elements in 9 groups, and offers a close focus distance of 18.9cm, with a true 1:1 magnification. The lens is digitally optimised with special coatings that are designed to reduce flare and ghosting as well as lateral chromatic aberrations.
The Sigma impresses with a very small minimum aperture, allowing plenty of depth of field, but test charts show it to not be the sharpest lens in comparison with some of its peers. Performance is adequate, with best results at f/11, before the mean MTF results begin to dip. Chromatic aberration results are very good at the centre of the frame with moderate fringing occurring at the corner of the frame.
Verdict
A good budget lens with reasonable if not stunning performance
Trusted Score
Score in detail
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Value 9
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Design 9
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Image Quality 8
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Features 8
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Professional conduct
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Editorial independence
Editorial independence means being able to give an unbiased verdict about a product or company, with the avoidance of conflicts of interest. To ensure this is possible, every member of the editorial staff follows a clear code of conduct.
Professional conduct
We also expect our journalists to follow clear ethical standards in their work. Our staff members must strive for honesty and accuracy in everything they do. We follow the IPSO Editors’ code of practice to underpin these standards.
