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Rozsah expozice (nebo expoziční, osvitová … Rozsah expozice (nebo expoziční, osvitová nebo fotografická pružnost) ve fotografii je jeden z některých typů dynamického rozsahu. Je to vlastnost snímacího fotografického materiálu (filmu, fotočipu apod.), která udává, jak velký nejsvětlejšího a nejtmavšího bodu scény je možné na něj zaznamenat. Umožňuje také fotografickému materiálu tolerovat odchylky od optimální expozice. O rozsahu expozice se analogicky, byť poněkud nepřesně, hovoří také u světelného rozsahu scény, tj. u rozsahu jejích jasů, jasového rozsahu.. u rozsahu jejích jasů, jasového rozsahu.
, In photography, exposure range may refer t … In photography, exposure range may refer to any of several types of dynamic range:
* The light sensitivity range of photographic film, paper, or digital camera sensors.
* The luminosity range of a scene being photographed.
* The opacity range of developed film images
* The reflectance range of images on photographic papers. The exposure range of a device is usually expressed in stops, which are equivalent to where c is the medium or device's contrast ratio. For example, average Digital Video (DV) has a contrast ratio of 45:1, so its exposure range is roughly 5.5 stops. Film has an exposure range of approximately 14 stops. Exposure is usually controlled by changing the lens aperture (the amount of light it gathers), the shutter speed (how long light is gathered) or sensitivity (how strongly the film or sensor responds to light). Changing exposure does not change the exposure range. A graduated neutral density filter can be also used to improve the reproduction of the exposure range of the scene, by darkening bright parts of the image. A graduated filter will reduce the extreme highlights of an image, such as a clear, open sky as well as sunlight. The filter is usually an even gradation of neutral gray to clear, covering the top third to half of the filter in gray. Therefore, it mostly affects the top third to half of the frame's exposure, leaving the highlights in the bottom half to two-thirds unaffected. Often these filters are the square gelatin, polycarbonate, or glass type. A mounting kit such as a square frame receptacle mounted to interchangeable screw-in rings will hold the filter at an appropriate orientation. These can be mounted to the end of an SLR lens camera in the same fashion as a polarizing lens, UV filter, and various other screw-in type filters for SLR and DSLR cameras.-in type filters for SLR and DSLR cameras.
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| rdfs:comment |
Rozsah expozice (nebo expoziční, osvitová … Rozsah expozice (nebo expoziční, osvitová nebo fotografická pružnost) ve fotografii je jeden z některých typů dynamického rozsahu. Je to vlastnost snímacího fotografického materiálu (filmu, fotočipu apod.), která udává, jak velký nejsvětlejšího a nejtmavšího bodu scény je možné na něj zaznamenat. Umožňuje také fotografickému materiálu tolerovat odchylky od optimální expozice. O rozsahu expozice se analogicky, byť poněkud nepřesně, hovoří také u světelného rozsahu scény, tj. u rozsahu jejích jasů, jasového rozsahu.. u rozsahu jejích jasů, jasového rozsahu.
, In photography, exposure range may refer t … In photography, exposure range may refer to any of several types of dynamic range:
* The light sensitivity range of photographic film, paper, or digital camera sensors.
* The luminosity range of a scene being photographed.
* The opacity range of developed film images
* The reflectance range of images on photographic papers. Exposure is usually controlled by changing the lens aperture (the amount of light it gathers), the shutter speed (how long light is gathered) or sensitivity (how strongly the film or sensor responds to light). Changing exposure does not change the exposure range.posure does not change the exposure range.
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| rdfs:label |
Exposure range
, Rozsah expozice
, Faixa Din
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