Samyang Cine SYCV10M-C 10mm T3.1 Cine Wide Angle Fixed Lens for Canon EF Cameras Ultra-Wide 106 Degree Edge to Edge Coverage Fast T3.1 Maximum Aperture / Focuses to 9.5 Inches De-Clicked (Uncoupled) and Geared Aperture and Focus Rings Nano Crystal Coating System (NCS) Maximizes Transmission and Reduces Internal Reflections Inner Focusing System (IF) Prevents Change in Length and Keeps Integrated Lens Hood Properly Oriented Lens not Zoomable