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Results tagged with focal-length
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user 13846
Focal length is the distance (measured in mm) between the surface of a lens and the focal point, when the lens is focussed at infinity. Smaller focal lengths indicate wide-angle lenses, larger focal lengths indicate a telephoto lens.
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Transmission, Aperture, and Focal Length in Low Light Situations
DXOMark defines and reports Transmission as:
Do lenses affect light transmission?
Photographic lenses are made of
several elements of very pure glass, each element being carefully
coated t …
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