World's first 1.8 wide-angle lens, setting a new industry benchmark Groundbreaking aspherical element ensuring premium image clarity Largest glass mold (80mm) ensuring virtually zero distortion Three FLD glass elements rivaling calcium fluorite performance Four SLD glass elements minimizing chromatic aberration Ultra-efficient autofocus system for rapid shot readiness Minimum focus distance of 10.6 inches enabling exceptional close-ups Super Multi-Layer Coating minimizing flare and producing color-neutral imagery Integrated HSM providing quick, silent autofocus Optimal AF algorithm ensuring smoother focusing Full-time manual focus control, adjustable with a simple rotation Durable construction with Thermally Stable Composite material