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Graduated neutral density
| Глоссарий терминов в фотографии |
Graduated neutral density. a type of neutral density filter in which brightness is reduced more on one side of the filter than on the other, allowing the photographer to reduce the contrast between, for example, bright sky and dark land.
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Gnd, английский
- Земля, наземный
- Graduated neutral density
- Ground (electrical).
- Ground
- Ground (control)
- Graduated neutral density. a type of neutral density filter in which brightness is reduced more on one side of the filter than on the other, allowing the photographer to reduce the contrast between, for example, bright sky and dark land.
- "земля"; заземление g2o правительство - организация до продолжать; идти дальше go-ahead mode эстафетный режим
- Ground (icao)
- Ground control service / facility
- Ground control
- Surface of the earth (either land or water)
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Brightness, английский
- Term for the intensity of illumination of a reproduced video picture.
- The attribute of visual perception in accordance with which an area appears to emit or reflect more or less light (this attribute of color is used in the color model hsb - hue, saturation, brightness). see lightness.
- A term to indicate the relative amount of light intensity available. brighter is more light, dimmer is less light. in an infrared system, the brightness control may affect actual image intensity or it may change the temperature range displayed. either eff
- The attribute of visual perception in accordance with which an area appear to emit more of less light. (luminance is the recommended name for the photo-electric quantity which has also been called brightness.)
- In ntsc and pal video signals, the brightness information at any particular instant in
- Яркость
- The value of a pixel in an electronic image, representing its lightness value from black to white. usually defined as brightness levels ranging in value from 0 (black) to 255 (white).
- In ntsc and pal video signals, the brightness information at any particular instant in a picture is conveyed by the corresponding instantaneous dc level of active video. control is an adjustment of setup (black level, black reference).
- Is strictly defined as an attribute of a visual sensation according to which an area appears to emit more or less light. we sometimes misuse the term brightness in this catalog instead of the more correct “luminance.” luminance, used for sources, is the luminous flux in an elemental beam from a given point per unit area per solid angle in the specified direction.
- The visual sensation of the luminous intensity of a light source. the brightness of a laser beam is most closely associated with the radiometric concept of radiance.
- A term mostly used in a qualitative way, related to the output power and beam quality of a laser; quantitatively
- The luminance of objects. the brightness of any area of the subject is dependent on how much light falls on it and how reflective it is. brightness range is the relationship we perceive between the light and dark subjects in a scene. brightness contrast is a judgment of the relative measure of that range, such as high, low, or normal. brightness values are sometimes referred to as ev (exposure values), a combination of aperture and shutter speed. brightness values in the scene are translated to tonal values on film.
- Value of a pixel in a digital image giving its value of lightness from black to white, with o being black and 255 being white.
- That attribute of visual perception in accordance with which a surface appears to emit more light or less light. now called luminance.
- The amount of light that is emitted by a computer monitor or picture displayed on the monitor.
- Яркость. для видеосигналов систем ntsc и pal
Photograph, английский
- A picture taken with a camera, which uses the chemical action of light on sensitive film verb to take a picture of something with a camera
- Фотография, фотоснимок
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High dynamic range, английский
High dynamic range. techniques that allow a digital image to show a wider contrast range than current image sensors can record in one file. some cameras have firmware to do the processing.
Guide number, английский
- Guide number. a value indicating the power of an electronic flash apparatus, and used to estimate exposure. gn = distance ? f-number. one needs to specify the film or sensor iso speed, and it is conventional to quote for iso 100/21°. the distance can be i
- The output power rating of a electronic flash unit.
- A number that relates the output of electronic flash when used with a particular speed film. the higher the guide number, the more the light output. guide numbers, or gn serve as a way to calculate aperture when shooting flash in manual exposure mode. dividing distance into guide number gives the aperture
- The power output rating of a speedlight flash unit.
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