Sigma 17-40mm F1.8 DC Leica L Lens Mount:Leica L The round baitcaster that defines

The round baitcaster that defines refinement

The SLX BFS puts Shimano's FTB brake system in a tough

and an automatic stop function

ATD Tough drag for fade-free pressure over long fights

Sigma 17-40mm F1.8 DC Leica L Lens Mount:Leica L The round baitcaster that definesConstant F1. 8 large aperture standard zoom for APS C mirrorless cameras (Art line) Successor concept to the 18 35mm F1. 8 DC HSM with a wider 17 40mm range Over 30% lighter than the earlier F1. 8 zoom, approx. 525 560 g HLA autofocus motor for fast, quiet focusing Internal zoom and focus breathing conscious design for video production Available for Leica L, Canon RF, Fujifilm X and Sony E mounts