[Pre Order - allow extra time] NiSi ATHENA PRIME 35mm T1.9 Full-Frame Lens (L Mount, Drop-In Filter) Full-Frame - T1.9 to T22, 80mm Front Diameter, 10 Aperture Blades, 0.8 MOD Focus and Aperture Gears, 300° Focus Rotation, Lens Markings in Feet and Meters