Used Sigma Zoom-T21-35mm f/3.5 - U8

The Sigma Zoom-γ 21-35mm f/3.5-4 holds a landmark place in lens history as the world's first super wide-angle zoom lens, effectively replacing four individual wide-angle primes — 21mm, 24mm, 28mm, and 35mm — with a single optic. Its innovative floating element system, developed through years of dedicated optical research, virtually eliminates aberrations across the entire zoom range while delivering notably high sharpness and image brilliance for a lens of this scope. A push-pull zoom and focus mechanism sets it apart from the two-touch designs common among competing super-wide zooms, and its close-focusing capability extends creative versatility well beyond standard wide-angle use. Offered across nearly every major manual-focus SLR mount of its era, this pioneering Sigma zoom remains a historically significant and highly capable lens for architecture, interior, and expansive landscape photography.