Master 5x50 Night Vision Binocular Gen1+ - YouTube. The Master 5x50 Night Vision Binocular Gen. 1+ features enhanced operating characteristics. Combination of a CF-Super Gen. 1+ tube and a high-aperture 50mm R-Contact objective lens provides a distortion free, crisp and geometrically precise image on the entire surface of the screen. 1+ light amplification ratio of 1200 essentially exceeds a similar value of the gen. This feature gives the Master 5x50 Night Vision Binocular Gen. 1 a great viewing range and high degree of detailed recognition of observed objects. In field conditions ...