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  2. Image circle - Wikipedia

    en.wikipedia.org/wiki/Image_circle

    The rectangle marks the film area of the photographic film or image sensor. In practice, the edge of the image circle is sometimes less abrupt than shown, and the image quality near the periphery is degraded in more complex ways than is simulated here. The image circle is the cross section of the cone of light transmitted by a lens or series of ...

  3. VR photography - Wikipedia

    en.wikipedia.org/wiki/VR_Photography

    With a larger detent interval, fewer images are needed to capture a complete panoramic scene. The photographer may only need to take 6 shots as opposed to 10 shots to capture the same panorama. The combination of a precision rotator and a digital camera allows the photographer to take rectangular "slices" of any scene (indoors or outdoors).

  4. Fisheye lens - Wikipedia

    en.wikipedia.org/wiki/Fisheye_lens

    In a circular fisheye lens, the image circle is inscribed in the film or sensor area; in a diagonal ("full-frame") fisheye lens, the image circle is circumscribed around the film or sensor area. This implies that using a fisheye lens for a different format than it was intended for is easy (as opposed to a rectilinear lens), and may change its ...

  5. List of optical illusions - Wikipedia

    en.wikipedia.org/wiki/List_of_optical_illusions

    An autostereogram is a single-image stereogram (SIS), designed to create the visual illusion of a three-dimensional (3D) scene from a two-dimensional image in the human brain. An ASCII stereogram is an image that is formed using characters on a keyboard. Magic Eye is an autostereogram book series. Barberpole illusion

  6. Equirectangular projection - Wikipedia

    en.wikipedia.org/wiki/Equirectangular_projection

    Equirectangular projection of the world; the standard parallel is the equator (plate carrée projection). Equirectangular projection with Tissot's indicatrix of deformation and with the standard parallels lying on the equator True-colour satellite image of Earth in equirectangular projection Height map of planet Earth at 2km per pixel, including oceanic bathymetry information, normalized as 8 ...

  7. List of map projections - Wikipedia

    en.wikipedia.org/wiki/List_of_map_projections

    Boundary is a circle. All parallels and meridians are circular arcs. Usually clipped near 80°N/S. Standard world projection of the NGS in 1922–1988. c. 150: Equidistant conic = simple conic: Conic Equidistant Based on Ptolemy's 1st Projection Distances along meridians are conserved, as is distance along one or two standard parallels. [3] 1772

  8. Keystone effect - Wikipedia

    en.wikipedia.org/wiki/Keystone_effect

    The keystone effect is the apparent distortion of an image caused by projecting it onto an angled surface. It is the distortion of the image dimensions, such as making a square look like a trapezoid, the shape of an architectural keystone, hence the name of the feature. In the typical case of a projector sitting on a table, and looking upwards ...

  9. Kinetoscope - Wikipedia

    en.wikipedia.org/wiki/Kinetoscope

    The filmstrip, based on stock manufactured first by Eastman, and then, from April 1893, by New York's Blair Camera Co., was 1 3/8 inches wide; each vertically sequenced frame bore a rectangular image, 1 inch wide by 3/4 inch high, and four perforations on each side. [30]

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