The day after Christmas was also the traditional day on which the aristocracy distributed presents (boxes) to servants and employees  a sort of institutionalized Christmas-bonus party. The servants returned home, opened their boxes and had a second Christmas on what became known as Boxing Day.
300 mm. For a 35 mm camera with a diagonal of 43 mm, the most commonly used normal lens is 50 mm, but focal lengths between about 40 and 58 mm are also considered normal. The 50 mm focal length was chosen by Oskar Barnack, the creator of the Leica camera.
This fixed-focal length camera will support up to 1080p@30FPS (FHD) capture in either RGB or YUV4:2:2 color. PC camera in the set. Its lens aspect ratio is 16:9 and has a built in IR cut filter. It appears to the applications that have not yet implemented RealSense as the computer's webcam.