The f/1.2 maximum aperture combined with an HLA-driven high-speed AF motor delivers exceptional subject separation and reliable focus in low light. Its optical design, featuring 4 aspherical elements and an 11-blade diaphragm, produces smooth bokeh while the dust- and splash-resistant construction ensures durability in challenging conditions. This lens is best for professional portrait and wedding photographers who need a fast, weather-sealed 35mm prime with expressive rendering.