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Bellows (photography) In photography, a bellows is the accordion -like, pleated expandable part of a camera, usually a large or medium format camera, to allow the lens to be moved with respect to the focal plane for focusing. [1] Bellows are also used on enlargers. The bellows provides a flexible, dark extension between the film plane and the ...
Focus (optics) Eye focusing ideally collects all light rays from a point on an object into a corresponding point on the retina. A demonstration of camera focus on different distances, showing a bamboo rooftop. Text on a page that is partially in focus, but mostly not in varying degrees. In geometrical optics, a focus, also called an image point ...
A point-and-shoot digital camera with optical viewfinder made by Canon, specifically the IXUS 850 IS, early 2010s. A point-and-shoot film camera made by Yashica with a Tessar lens, early 1990s. A point-and-shoot camera, also known as a compact camera and sometimes abbreviated to P&S, is a still camera (either film or digital) designed primarily ...
That can put a real strain on your eyes. Eye problems caused by computer use fall under the heading computer vision syndrome (CVS). It isn’t one specific problem. Instead, it includes a whole ...
Focus puller. A focus puller or first assistant camera ( 1st AC) is a member of a film crew 's camera department whose primary responsibility is to maintain the camera lens's optical focus on whatever subject or action is being filmed. "Pulling focus" refers to the act of changing the camera lens 's focus distance to a moving subject's distance ...
Depth of focus. Depth of focus is a lens optics concept that measures the tolerance of placement of the image plane (the film plane in a camera) in relation to the lens. In a camera, depth of focus indicates the tolerance of the film's displacement within the camera and is therefore sometimes referred to as "lens-to-film tolerance".
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