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A fisheye lens is an ultra wide-angle lens that produces strong visual distortion intended to create a wide panoramic or hemispherical image. [4][5]: 145 Fisheye lenses achieve extremely wide angles of view, well beyond any rectilinear lens. Instead of producing images with straight lines of perspective (rectilinear images), fisheye lenses use ...
In mathematics, a stereographic projection is a perspective projection of the sphere, through a specific point on the sphere (the pole or center of projection ), onto a plane (the projection plane) perpendicular to the diameter through the point. It is a smooth, bijective function from the entire sphere except the center of projection to the ...
Fisheye lenses, which take hemispherical views, utilize this type of distortion as a way to map an infinitely wide object plane into a finite image area. In a zoom lens, barrel distortion appears in the middle of the lens's focal length range and is worst at the wide-angle end of the range. [2]
A Luneburg lens (original German Lüneburg lens) is a spherically symmetric gradient-index lens. A typical Luneburg lens's refractive index n decreases radially from the center to the outer surface. They can be made for use with electromagnetic radiation from visible light to radio waves. For certain index profiles, the lens will form perfect ...
Fisheye is a revision-control browser [1] and search engine owned by Atlassian, Inc. Although Fisheye is a commercial product, it is freely available to open source projects and non-profit institutions. [2] In addition to the advanced search [3] and diff capabilities, [4] it provides: the notion of changelog and changesets [5] - even if the ...
English: An illustration of a sensor-lens system imaging a point using the variable names from the Mapping function portion of the Fisheye Lens Wikipedia article. The illustration was created to give a reader a conceptual idea of the physical quantities represented in the variables used in the mapping function.
PTGui was created as a GUI frontend to Helmut Dersch's Panorama Tools. It features its own stitching and blending engine [2] along with compatibility to Panorama Tools. PTGui supports telephoto, normal, wide angle and fisheye lenses [3] to create partial cylindrical up to full spherical panoramas. PTGui can handle multiple rows of images.
MSRP. $1,399 USD. The EF8–15mm f/4L FISHEYE USM is a fisheye zoom lens for Canon digital single-lens reflex cameras (DSLRs) with an EF lens mount. It delivers 180° diagonal angle of view images for all EOS SLR cameras with imaging formats ranging from full-frame to APS-C, and provides 180° circular fisheye images for full-frame EOS models.
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