sigma fuji x

The materials note an ultra-telephoto reach described as equivalent to 600mm (35mm). They also state the 56mm lens corresponds to roughly an 84mm (35mm-equivalent) focal length on APS-C Fujifilm X bodies.

Warranty periods shown in the product details vary; examples include 1‑year, 2‑year, and 3‑year limited warranties.

Some Sigma X-mount lenses describe weather resistance and rugged construction, noting dust-and-splash sealing at the mount and the use of stronger materials such as magnesium alloy in key components.

Results include an ultra-telephoto 100–400mm F5–6.3 zoom, a 56mm F1.4 prime, and compact wide/standard options such as a 16mm and an 18–50mm lens compatible with X-mount bodies.

Primes are described as using stepping-motor or video‑AF designs for smooth, quiet focusing. The ultra-telephoto zoom highlights high‑speed AF with AF‑C support and built-in optical stabilization (OS) quoted at five stops.

Listings include a bright prime at f/1.4 and zooms with ranges such as f/5–6.3; one prime listing also specifies a minimum aperture down to f/16.