Full-Frame | f/1.2 to f/16 | Fast Wide-Angle Prime Lens | Multi-Focus System and Dual STM | Control Ring and Function Buttons | 1 Aspherical ED & 3 ED Elements | 11.8" Minimum Focusing Distance
Aspheric Lens Design | Lead- and Arsenic-Free Eco-Glass | BAK4 Traditional Porro Prism Design | Wide Apparent Angle of View | Large Center Focusing Wheel