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Light enters a dark box through a small hole and creates an inverted image on the wall opposite the hole. [2]The fundamental technology of most photography, whether digital or analog, is the camera obscura effect and its ability to transform of a three dimensional scene into a two dimensional image.
One method of infrared photography using digital cameras is to remove the infrared blocker in front of the sensor and replace it with a glass cover that either removes or restricts visible light (infrared-only conversion) or one that passes infrared wavelengths ("full spectrum" conversion).
Some nest box cameras have microphones inside them. It is relatively easy to construct a nest box camera because it involves little more than installing a camera in a nest box, remembering only to choose or construct a nest box large enough to contain the camera, to have a box deep enough to enable proper focusing of the camera and to use a ...
The Kodak introduced in May 1888 first commercially successful box camera for roll film—the advertising slogan being You press the button – we do the rest. The Kodak Brownie, a long lasting series of classical box cameras using roll film. The Ansco Panda was designed to compete directly with the Brownies. It used 620 film.
Fig. 1. HSL (a–d) and HSV (e–h). Above (a, e): cut-away 3D models of each. Below: two-dimensional plots showing two of a model's three parameters at once, holding the other constant: cylindrical shells (b, f) of constant saturation, in this case the outside surface of each cylinder; horizontal cross-sections (c, g) of constant HSL lightness or HSV value, in this case the slices halfway ...
This required no special camera or viewer, just a special color-compensating filter for the camera lens and a special holder for the photographic plates. The holder contained the heart of the system: a clear glass plate on which very fine lines of three colors had been ruled in a regular repeating pattern, completely covering its surface.
Chromaticity consists of two independent parameters, often specified as hue (h) and colorfulness (s), where the latter is alternatively called saturation, chroma, intensity, [1] or excitation purity. [ 2 ] [ 3 ] This number of parameters follows from trichromacy of vision of most humans, which is assumed by most models in color science .
Within a decade of being introduced in America, 3 general forms of camera were in popular use: the American- or chamfered-box camera, the Robert's-type camera or "Boston box", and the Lewis-type camera. The American-box camera had beveled edges at the front and rear, and an opening in the rear where the formed image could be viewed on ground glass.
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