Sigma has announced a lightweight standard zoom for full-frame mirrorless cameras, the 28-70mm F2.8 DG DN | C. It’s designed to be a smaller and more affordable alternative to the firm’s existing 24-70mm f/2.8, and a direct competitor to the Tamron 28-75mm F/2.8 Di III RXD. Its credentials as a carry-anywhere lens are reinforced by its compact dimensions: 72.2mm in diameter, 101.5mm in length and 470g in weight.
Optically the lens is constructed of 16 elements in 12 groups, including 2 ‘F’ low dispersion, 3 super-low dispersion and 3 aspherical elements to suppress optical aberrations. Nine rounded blades are used in the construction of the aperture diaphragm, with the aim of delivering attractive bokeh. The barrel boasts dust- and splash-proof construction, and sports a physical AF/MF switch on the side.
The minimum focus distance ranges from 19cm at wideangle to 38cm at telephoto, and the lens accepts 67mm filters. It’ll be available in Leica L and Sony E mounts from March 12th, and cost GBP759.99.