Sigma 12-24mm f/4 DG HSM ART ultra širokokutni objektiv za Sigma SA mount zoom lens 12-24 F4 F4.0 205956 ZNAČAJKE SA-Mount Lens/Full-Frame Format Aperture Range f/4 to 22 FLD and Aspherical Elements Super Multi-Layer Coating Hyper Sonic AF Motor, Manual Override Rounded 9-Blade Diaphragm TSC Material, Brass Bayonet Mount Dust- and Splash-Proof Construction Compatible with Sigma U