SIGMA 70MM F2.8 DG MACRO ART

This is Sigma’s first macro lens in the Art line – so what’s the verdict?

This new macro is the first to adopt the Art moniker and, surprisingly, it’s not any larger than the company’s previous macros. In fact, it’s relatively small, though unlike most modern designs the barrel extends. It’s not really an issue, but it is something to be aware of, as the extending barrel looks a little fragile. With the lens at full extension, the working distance is around 15cm from the front, so you have to be careful.

Fortunately, the provided hood attaches to the body, rather than the barrel extension, and provides some protection. The hood barely reduces the working distance, however it does obstruct distance and magnification markings, which are detailed on the barrel. Not that you’re likely to need them – most hardcore macro users working at or close to 1:1 are likely to use a focus rail anyway. Even if you’re not, there’s no need to worry about the focusby-wire operation as it’s really rather good.

Naturally the built-in AF is a little slower than a conventional short-tele when used for everyday photography, but it’s not tardy either and there’s no faulting the optical quality.

This lens is exceptionally sharp. It is also practically devoid of axial fringing, which can be really troublesome with a macro. Inevitably there’s some vignetting, but it’s wonderfully sharp out to the corners even at the initial aperture, and of course only improves on stopping down – at least until diffraction starts to impinge, but that’s an issue with all lenses.

Left below ABERRATION Axial fringing in a macro is to be avoided at all costs, and this lens is one of the best corrected we’ve seen

Left aboveMAXIMUM MAGNIFICATION This lens is exceptionally sharp even at f16 on a 21MP sensor, but obviously you risk losing definition to diffraction