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Those who wear eyeglasses with so-called "progressive" lenses, in which the focal length gradually changes so as to ease the viewing of close objects using the lower part of the lens, may find that viewing a stereogram is easier if the glasses are pushed up a little so that the stereogram is viewed through a part of the lens optimized for ...
For this camera he estimated a film speed of ISO 25/15° – 40/17° and a shutter speed of 1/60 s – 1/100 s. The film was cut to the format 30 mm × 60 mm and bent into a concave shape to prevent unnecessary distortion due to the half-circle movement of the lens. [15]
In the case of a camera one would quote the plate scale, which compares the apparent (angular) size of a distant object to the size of the real image produced at the focus. The plate scale is the reciprocal of the focal length of the camera lens; lenses are categorized as long-focus lenses or wide-angle lenses according to their focal lengths.
Different kinds of camera lenses, including wide angle, telephoto and speciality. A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses (compound lens) used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically.
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 January 2025. Art and practice of creating images by recording light For other uses, see Photography (disambiguation). Photography of Sierra Nevada Photography is the art, application, and practice of creating images by recording light, either electronically by means of an image sensor, or chemically ...
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Previously, the cameras could only record data and images for future playback once the camera was retrieved from the animal. When introduced in 2001 the camera was about half an inch in size. It had a resolution of 340 lines and is sensitive down to 3 lux. At this time it used a nine-volt battery for short term documentation of the animal's ...
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