Sigma 18-50mm f/2.8 DC DN Contemporary Lens for Fujifilm X, Bundle with 55mm Filters

Sigma 18-50mm f/2.8 DC DN Contemporary Lens

This constant-aperture zoom covers an 18-50mm focal range on Fujifilm X-mount bodies, delivering a 27-75mm full-frame equivalent field of view. The bundle includes a 55mm filter kit, lens pouch, cleaning supplies, and a cap tether alongside the standard caps, hood, and manual. It suits photographers who want a single lightweight lens for landscapes, portraits, and daily shooting without swapping glass. Buyers who need longer telephoto reach or wider ultra-wide angles will need additional lenses.

Optical construction with 1 SLD and 3 aspherical

One Special Low Dispersion element and three glass-moulded aspherical elements work together to suppress chromatic aberration, distortion, and vignetting across the zoom range. This correction maintains sharpness and clarity from centre to edge even when shooting wide open at f/2.8. The design keeps performance consistent throughout extended shooting sessions rather than only in brief bursts. Photographers who require specialised corrections such as apochromatic performance or floating-element designs will not find those technologies here.

Constant f/2.8 maximum aperture

The aperture stays at f/2.8 from 18mm to 50mm, providing predictable exposure and depth-of-field control while zooming. Seven rounded blades produce smooth, circular bokeh highlights for subject isolation in portraits and street scenes. This single specification determines whether the lens matches a shooter's low-light and creative-blur requirements. Users who need faster maximum apertures such as f/1.8 or f/1.4 for extreme shallow depth of field must consider different optics.