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Search "F-number"
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F-number | |
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About 14 pages (4,281 words) in 2 products |
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Encyclopedia and Summary Information
summary from source:
 F-Stop : Forensic Science Terms
22 words, approx. 1 pages Focal setting for the diaphragm controlling the size of the aperture; the higher the f-stop, the smaller the aperture... summary from source:
 F-number Information
4,259 words, approx. 14 pages
In optics, the f-number (sometimes called focal ratio, f-ratio, or relative aperture[1]) of an optical system expresses the diameter of the entrance pupil in terms of the effective focal length of the lens; in simpler terms, the f-number is the focal... 
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About 14 pages (4,281 words) in 2 products |
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