The Sigma 100‑400mm F5‑6.3 DG DN OS | Contemporary is a compact, lightweight super‑telephoto zoom for full‑frame mirrorless cameras (Sony E, L‑Mount, Fujifilm X). It features 22 optical elements in 16 groups, built‑in stabilization rated up to 4–5 stops, a quiet stepping motor for smooth autofocus, and a weather‑sealed mount. Designed for versatility, it delivers crisp, high‑resolution results throughout its zoom range while remaining portable enough for handheld wildlife, sports, and travel photography