A frame line is the unused space that separates two adjacent images, "frames", on a piece of motion picture film. It can vary in width; it is approximately 8 millimietres (0.3 in) wide on a common "hard matted" 35 mm film print of 1:1.85 aspect ratio, but very narrow on a "full-frame" negative, or in a CinemaScope print, where the frames practically touch each other.