L078-2.78-M12 Description 2.78mm M12 wide angle low distortion fixed focus lens Specifications Focal Length 2.78mm Aperture f/2.2 Image Size 10.16mm [1/2.5”] Angle of View D: 112° H: 100° V: 80° Mount Type M12 x 0.5-6g Minimum Object Distance 0.2m Distortion <-3% CRA <19° Back Focal Length 4.92mm Flange Back Length 3.74mm External Dimensions D=18mm L=18.36mm AR coating Yes Net Weight 8g Relative illumination Distortion Dimensions