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Compression, long-lens, or telephoto distortion can be seen in images shot from a distance using a long focus lens or the more common telephoto sub-type (with an angle of view narrower than a normal lens). Distant objects look approximately the same size – closer objects are abnormally small, and more distant objects are abnormally large, and ...
If a picture is taken with a stereo camera (or pair of cameras) and a 4X telephoto lens or 4X zoom built into the camera(s) is used, objects will be the size they would be at 1/4 the distance, but will have no where near the depth, which is why zoom is generally frowned upon in stereo photography.
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.
Image quality is excellent, on a par with Canon’s much pricier and heavier 100-400mm lens. Best Canon telephoto: Canon EF 100-400mm f/4.5-5.6 L IS II USM (Image credit: Canon)
In geometric optics, distortion is a deviation from rectilinear projection; a projection in which straight lines in a scene remain straight in an image.It is a form of optical aberration that may be distinguished from other aberrations such as spherical aberration, coma, chromatic aberration, field curvature, and astigmatism in a sense that these impact the image sharpness without changing an ...
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 ...
Features of this lens are: a wide rubber focus ring that is dampened, a distance window, the ability to limit the focus range, and an image stabilizer (on the IS versions). The maximum aperture of f / 2.8 or f / 4 gives this lens the ability to create shallow depth of field effects, while the eight- or nine-blade diaphragm produces smooth ...
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