| Ground Glass |
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In Motion Picture cameras, the ground glass is a small, usually removable piece of transparent glass that sits between the Rotating Mirror Shutter and the viewfinder. The ground glass usually contains precise markings to show the camera operator the boundaries of the frame or the center crosshair, or any other important information. Because the ground glass is positioned between the mirror shutter and the viewfinder, it does not interfere with the image reaching the film and is therefore not recorded over the final image, but rather serves as a reference for the camera operator. Ground glasses commonly serve as a framing reference for a desired Aspect Ratio . Because most films shot with Spherical Lenses are shot full-frame and later masked during projection to a more widescreen aspect ratio, it is important not only for the operator to be able to see the boundaries of that aspect ratio, but also for the ground glass to be properly aligned in the camera so that the markings are an exact representation of the boundaries of the image recorded on film. EXTERNAL LINKS |
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