Sigma updates its mid-range telephoto macro lens.
Sigma introduced the 105mm F2.8 EX DG OS HSM Macro in 2011, and when the price dropped by nearly $400 last month, you knew the next generation was waiting in the wings. In fact, all but one of Sigma's Macro lenses have dropped in price, so it might be a good time to scoop one up.
Available in L-mount or E-mount, the new Sigma 105mm F2.8 DG DN Macro takes its place in the Art series, offering the same full-frame coverage but with improved optics designed for mirrorless cameras. For the uninitiated, DG denotes full-frame and DN stands for mirrorless.
Optically, 17 elements are packed into 12 groups including a spherical low dispersion element (SLD) which reduces chromatic aberration, a phenomenon where the colors in the image come into focus differently along the edge. The rounded 9-blade aperture design is going to provide a pleasing bokeh similar to other Art lenses, and the F2.8 is fast enough for low light conditions when shooting video, especially when paired with the a7S III.
On the lens barrel is a de-click aperture button along with a user-assignable AFL button, and focus limiter settings. You can also lock the aperture with the ring lock switch. Sigma says the lens is compatible with autofocus systems and lens-based corrections depending on the camera model. Autofocus is powered by a Hyper Sonic Motor, a ring-type motor that's similar to Canon's USM and Nikon's SWM technology making it quiet enough for video.
With a 1:1 magnification ratio, you can get some interesting b-roll shots if you have a steady hand and the patience for it as macro lenses make for a great option when shooting product videos or if you need a punchy close-up.
When shooting L-mount, the lens has a minimum focusing distance of 11.6 inches (29.5cm) and a filter size of 62mm. As you might expect, the lens has water and oil repellent coatings and a dust and splash-proof design. The L-mount option weighs 715g (25.2oz) which is pretty comparable to others on the market.
The Sigma 105mm F2.8 DG DN Macro will start shipping in October for $799.