Sigma has announced the 18–50mm F2.8 DC DN lens for Fujifilm X-mount camera systems. This lens is effectively identical to Sigma's existing 18–50mm F2.8 DC DN lenses for Sony E-mount and L-mount camera systems.

Sigma’s lens, which offers a roughly 27–75mm full-frame equivalent zoom range, is constructed of 13 elements in ten groups, including three aspherical elements and one Super Low Dispersion (SLD) element. It uses a seven-blade aperture diaphragm, has a minimum focusing distance of 12.1cm (4.8") at 18mm and 30cm (11.9") at 50mm, and uses a 55mm front filter thread.

Sigma says the lens has specifically been optimized for Fujifilm X-mount camera systems, with support for Continuous AF and in-camera aberration correction. The lens is also sealed at the mount for better weather resistance, although Sigma stops short of calling it weather-sealed.

The lens measures 62mm (2.4") in diameter by 77mm (3") long when closed and weighs 285g (10oz).

The Sigma 18–50mm F2.8 DC DN lens for Fujifilm X-mount camera systems is set for release in December 2022 for $549. For comparison, Fujifilm’s own XF 16–55mm F2.8 R LM WR lens costs double that at $1199. Its XF 18-55mm F2.8-4 LM lens, which DPReview TV has compared to Sigma's new 18-50mm F2.8 DC DN lens, is also more expensive, costing $699.

Press release:

SIGMA 18-50mm F2.8 DC DN | Contemporary Lens for FUJIFILM X Mount Announced

Ronkonkoma, NY – November 14, 2022 SIGMA Corporation of America, the US subsidiary of SIGMA Corporation (CEO: Kazuto Yamaki. Headquarters: Asao-ku, Kawasaki-shi, Kanagawa, Japan) is pleased to announce the SIGMA 18-50mm F2.8 DC DN | Contemporary for FUJIFILM X Mountmirrorless cameras. This addition allows users to enjoy a high-performance, high-quality, compact standard zoom lens in native mount on their X Mount system.

The announcement of the 18-50mm F2.8 DC DN | Contemporary expands the SIGMA lineup for X Mount, joining the three fast-aperture prime lenses, the 16mm F1.4 DC DN | Contemporary, 30mm F1.4 DC DN | Contemporary, and 56mm F1.4 DC DN | Contemporary, which were announced for the FUJIFILM X Mount platform earlier this year.

The SIGMA 18-50mm F2.8 DC DN | Contemporary lens for FUJIFILM X Mount will retail for $549 and will be available through authorized retail partners in early December 2022.

Supplied accessories: Petal-type hood (LH582-02), Front cap (LCF-55 III), Rear Cap (LCR II)

Mount: FUJIFILM X Mount

Launch: December 2022

* The appearance and specifications of the product are subject to change.

A large F2.8 aperture zoom lens that need never leave your camera

This exceptionally light, bright, and sharp standard zoom for crop-sensor mirrorless cameras is the ultimate workhorse lens.

Long-awaited X Mount addition

SIGMA's first APS-C size mirrorless dedicated zoom lens, the 18-50mm F2.8 DC DN | Contemporary, will now be available for FUJIFILM X Mount. This addition allows users to enjoy high-performance, and high-quality SIGMA zoom lenses in native mount on their X Mount system.

The first three lenses in SIGMA's X Mount lineup were the wide-angle prime 16mm F1.4 DC DN | Contemporary, the standard prime 30mm F1.4 DC DN | Contemporary, and the telephoto prime 56mm F1.4 DC DN | Contemporary. The lineup consists of focal lengths making a complete system for mirrorless camera users. Now, with the addition of the 18-50mm F2.8 DC DN | Contemporary, a compact, lightweight, and high-performance large-aperture standard zoom lens, SIGMA offers a new option for this compact photographic system.

A control algorithm including AF drive and communication speed optimization has been developed specifically for X Mount interchangeable lenses. In addition to realizing high-speed AF, the lens also supports AF-C (Continuous AF) and in-camera aberration correction*. The mount is rubber-sealed to cater for use in a variety of environments.

* Available on supported cameras only.

Mount Conversion Service is available to convert other mounts of SIGMA 18-50mm F2.8 DC DN | Contemporary to FUJIFILM X Mount.

[Key Features]

Large F2.8 aperture and superb image quality

The compact body offers an easy-to-use zoom range of 27mm to 75mm in the 35mm format, a wide aperture of F2.8 throughout the entire zoom range that allows you to enjoy bokeh expressions, and sharp images achieved by the latest optical design technology. With a minimum focusing distance of 12.1cm and a maximum magnification of 1:2.8¹, it allows photographers to take advantage of the compact shooting system, such as shooting close-ups of your subject.

Exceptionally compact and lightweight body ideal for mirrorless cameras

The main feature of the 18-50mm F2.8 DC DN | Contemporary is its overwhelmingly compact and lightweight body that maximizes the excellent portability and advantages of an APS-C mirrorless camera. Despite its large aperture of F2.8, it is the smallest and lightest in its class² boasting a maximum diameter of 61.6mm, a length of 76.8mm and weight of 285g.³ This makes the large-aperture standard zoom easy to carry around in daily life.

Notes

¹ The minimum focusing distance and maximum magnification ratio are both values at the wide end.
² As an AF compatible, F2.8 constant aperture zoom lens for APS-C (as of October 2022, by SIGMA).
³ Size and weight measurements given for X Mount version.