Photographic and video apparatus utilising the golden ratio

摘要

Viewfinders for still or video cameras, a ground glass for movie cameras or viewfinders, or a projector gate or screen, is arranged to utilise the 'Golden Ratio' of ( ! 5+1)/2:1 as an aspect ratio. Preferably, the ground glass or viewfinder is provided with composition lines, points or other markers, which divide dimensions of the image in accordance with the ratio of ( ! 5+1)/2:1, to assist in composition of an image. A ground glass or viewfinder composition grid 1 is shown where width w and height h are in the golden ratio of 1.618. Horizontal composition lines 2a,2b taken individually divide the height h into two in accordance with the golden ratio. Similarly, width w may be divided by vertical composition lines 3a, 3b.