Sigma 150-600mm f/5-6.3 DG OS HSM | S £1200, $2000
A SIGMA ‘SPORT’ LINE LENS THAT LIVES UP TO ITS BILLING
Compared with Sigma’s Contemporary 150-600mm, the first thing you notice about the Sport edition is that it’s bigger and nearly a kilogram heavier. Indeed, at a pinch under three kilograms, it’s the heaviest lens in the group. However, it’s solidly built, and whereas the C-class Sigma has a weather-sealed mount, this one has a full set of seals around the joints and switches.
The S-class lens builds on the feature set of the C-class one, with the same multi-mode autofocus and stabilisation systems and custom settings facilities, plus an extra topgrade FLD (Fluorite Low Dispersion) element, making a total of two FLD elements and three SLD (Special Low Dispersion) ones.
True to its sporty claims, the lens features very fast autofocus that beats that of the other 150-600mm lenses on test, and the Nikon 200500mm. It also beats them for sharpness at the long end of the zoom range, and is particularly impressive for such a long lens.