Sigma announces 28-105mm F2.8 DG DN

The new Sigma 28-105mm F2.8 DG DN is a fast-aperture zoom with extended reach, while the company has also confirmed the 10-18mm F2.8 DC DN | Contemporary is coming for the Canon RF Mount.

Spanning many popular focal lengths in a single fast-aperture zoom, the Sigma 28-105mm F2.8 DG DN | Art is a compact, full-frame, wide-angle to telephoto zoom lens with a fast, constant aperture. Available for Sony E-mount and L-Mount, this lens covers several popular focal lengths from 28mm to 105mm, including the popular 85mm focal length for portraiture, remaining at F2.8 through the entire range.

It features HLA (High-response Linear Actuator) autofocus, and, like the 24-70mm F2.8 DG DN II | Art and the 28-45mm F2.8 DG DN | Art, it includes a lockable aperture ring with click/declick function, as well as two AFL buttons and a zoom lock switch. Additionally, the dust- and splash-resistant design and water-and oil-repellant coating on the front element makes it suitable for shooting both stills and video in inclement weather.

A minimum focusing distance of 15.8 inches (40cm) at all focal lengths, and maximum magnification ratio of 1:3.1 at the telephoto end add to its versatility. It also features a rounded twelve-blade diaphragm, which helps to keep the large-aperture unit as small as possible.

Sigma says that measures have been taken to minimize changes in optical performance due to differences in zoom and focus positions, including the use of a difficult-to-process large-diameter FLD glass in the first group to suppress aberrations in each group. In addition, the use of five aspherical lens elements has enabled the lens to achieve both a wide zoom range of 28mm to 105mm and a large-aperture of F2.8, while reducing its overall size.

The lens weighs 35.1 oz (995 grams). The lens barrel near the mount is made of magnesium rather than aluminum, ensuring rigidity while reducing the weight of these parts alone by two-thirds. The lens will retail for $1499 and will be available in late September 2024.

Key specs

Lens Construction: 18 elements in 13 groups
(2 FLD, 1 SLD, 5 aspherical)

Angle of view: 75.4 - 23.3°

Number of diaphragm blades: 12 (rounded diaphragm)

Minimum aperture: F22

Minimum focusing distance: 40cm / 15.8 in.

Maximum magnification ratio: 1:3.1 at f=105mm

Filter size: 82mm

Dimensions (Max. Diam. x Length): 87.8 x 157.9mm / 3.5 x 6.2 in.

Weight: 995g / 35.1 oz.

Sigma 10-18mm F2.8 DC DN | Contemporary

Originally announced in October 2023, the Sigma 10-18mm F2.8 DC DN | Contemporary was first released concurrently for L-Mount, Sony E-mount and Fujifilm X Mount, and is now available for Canon RF Mount. The new lens will be available through authorized retail partners in late September 2024 for a retail price of $659.

Sigma bills this as the world's smallest and lightest F2.8 zoom lens designed for APS-C format mirrorless systems. On the Canon system, the lens covers a 16-28.8mm (35mm equivalent) focal range, with a fast F2.8 constant aperture. Paired with the 18-50mm F2.8 DC DN | Contemporary, this duo of lenses covers a 16-80mm (35mm equivalent) range with the same bright F2.8 maximum aperture, with a combined weight of under 550g (19.5 oz.)