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Three-point lighting is a standard method used in visual media such as theatre, video, film, still photography, computer-generated imagery and 3D computer graphics. [1] By using three separate positions, the photographer can illuminate the shot's subject (such as a person) however desired, while also controlling (or eliminating) the shading and ...
Roger Penrose's solution of the illumination problem using elliptical arcs (blue) and straight line segments (green), with 3 positions of the single light source (red spot). The purple crosses are the foci of the larger arcs. Lit and unlit regions are shown in yellow and grey respectively.
The Phong reflection model was developed by Bui Tuong Phong at the University of Utah, who published it in his 1975 Ph.D. dissertation. [1] [2] It was published in conjunction with a method for interpolating the calculation for each individual pixel that is rasterized from a polygonal surface model; the interpolation technique is known as Phong shading, even when it is used with a reflection ...
The glass casts a shadow, but also produces a curved region of bright light. In ideal circumstances (including perfectly parallel rays, as if from a point source at infinity), a nephroid-shaped patch of light can be produced. [3] [4] Rippling caustics are commonly formed when light shines through waves on a body of water.
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A common artificial lighting strategy that creates an overall appearance similar to natural fill places the fill light on the lens axis so that it will appear to cast few if any shadows from the point of view of the camera, which allows the key light that overlaps it to create the illusion of 3D in a 2D photo with the same single-source ...
3-point_lighting.ogv (Ogg multiplexed audio/video file, Theora/Vorbis, length 36 s, 640 × 480 pixels, 219 kbps overall, file size: 958 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
I come from a formal broadcast lighting background and realise that this may not correspond with stills techniques, however, as the "subject" is all-important whatever illuminates the set or background could be no lights or many lights bares no relation to the 2,3,or 4 point lighting of the subject. To refer to 4 point lighting as the article ...