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A telephoto lens, also known as telelens, is a specific type of a long-focus lens used in photography and cinematography, in which the physical length of the lens is shorter than the focal length. [ 1 ] : 93 This is achieved by incorporating a special lens group known as a telephoto group that extends the light path to create a long-focus lens ...
This allows the camera to use a longer exposure and/or a longer focal length lens or even be attached to some form of photographic telescope co-axial with the main telescope. Telescope focal plane photography. In this type of photography, the telescope itself is used as the "lens" collecting light for the film or CCD of the camera.
Different kinds of camera lenses, including wide angle, telephoto and speciality. A camera lens, 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.
L1 - Telescope objective L2 - Eyepiece L3 - Camera lens. Afocal photography, also called afocal imaging or afocal projection is a method of photography where the camera with its lens attached is mounted over the eyepiece of another image forming system such as an optical telescope or optical microscope, with the camera lens taking the place of ...
A 500 mm long-focus lens of non-telephoto design. In photography, a long-focus lens is a camera lens which has a focal length that is longer than the diagonal measure of the film or sensor that receives its image. [1] [2] It is used to make distant objects appear magnified with magnification increasing as longer focal length lenses are used.
To be useful in photography any lens must be able to fit the camera for which it is intended and this will physically limit the size where the bayonet mounting or screw mounting is to be located. Photography is a highly competitive commercial business and both weight and cost constrain the production of lenses.
Bi-telecentric lens with 208 mm diameter front element and a C-mount camera interface 3D render simulating a photo taken with a fixed focal length and a telecentric lens. A telecentric lens is a special optical lens (often an objective lens or a camera lens) that has its entrance or exit pupil, or both, at infinity.
A teleside converter lens attached in front of a camera. 2 - Camera lens 1 - Teleside converter. A teleside converter [1] (also known as a telephoto conversion lens or a front mount teleconverter) [2] is a secondary lens which is mounted on the front of a photographic lens to increase the effective focal length of the lens they are attached to.
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