Sigma's Art line of lenses gets a boost with the new 24-105mm f/4 lens.
Going head-to-head with the popular Canon L-series of the same focal length, Sigma's version also features image stabilisation and a multi-layer coating to reduce flare. Designed for full-frame cameras, the constant aperture lens certainly has the footprint to reinforce its professional nature — 885 grams.
The focal length is particularly flexible, offering coverage from a wide- to mid-telephoto range. The Canon equivalent often ships as a kit lens for the 5D Mark III.
While the Canon 24-105mm lens bears the badge of the high-end L-series, it does have issues with distortion and chromatic aberration. Sigma's unit has a range of high-performance lenses, like special low distortion and FLD ("F" low dispersion), that may help this model outperform the Canon. That said, we won't know for sure until the lens is released.
Mounts will be available for Canon, Nikon, Sony and Sigma, with the lens also compatible with the mount-swapping service. Announced, photographers who change brand allegiance will be able to pay Sigma to convert their existing lenses to a new mount.
The lens will ship in November in the US, with Australian availability and pricing to be revealed at a later date.