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2. Lighting ratio - Wikipedia

   en.wikipedia.org/wiki/Lighting_ratio

   A key light of 800 footcandles and a fill light of 200 footcandles has a ratio of 5:1 according to the lighting ratio formula — (800 + 200):200 = 1000 / 200 = 5 : 1. The ratio can be determined in relation to F stops since each increase in f-stop is equal to double the amount of light: 2 to the power of the difference in f stops is equal to ...

3. Low-key photography - Wikipedia

   en.wikipedia.org/wiki/Low-key_photography

   The relative power of the main and the fill lights, known as light ratio, can be measured using a light meter. The low-key technique has a higher light ratio, for example 8:1, while the high-key technique has a lower ratio, around 1:1. [72] According to photographer Gavin Hoey "the first attention to detail has to be the background.

4. Low-key lighting - Wikipedia

   en.wikipedia.org/wiki/Low-key_lighting

   Low-key lighting is a style of lighting for photography, film or television. It is a necessary element in creating a chiaroscuro effect. [ 1 ] Traditional photographic lighting ( three-point lighting ) uses a key light , a fill light and a back light for illumination.

5. Foot-candle - Wikipedia

   en.wikipedia.org/wiki/Foot-candle

   In the US lighting industry, foot-candles are a common unit of measurement used by architects to calculate adequate lighting levels. Foot-candles are also commonly used in the museum and gallery fields in the US, where lighting levels must be carefully controlled to conserve light-sensitive objects such as prints, photographs, and paintings, the colors of which fade when exposed to bright ...

6. Exposure (photography) - Wikipedia

   en.wikipedia.org/wiki/Exposure_(photography)

   In a scene with strong or harsh lighting, the ratio between highlight and shadow luminance values may well be larger than the ratio between the film's maximum and minimum useful exposure values. In this case, adjusting the camera's exposure settings (which only applies changes to the whole image, not selectively to parts of the image) only ...

7. Through-the-lens metering - Wikipedia

   en.wikipedia.org/wiki/Through-the-lens_metering

   The commander unit usually controls the remote flashes by using flashes of visible or infrared light, although TTL-capable radio triggering systems are available. The photographer can normally vary the light ratios between the different flashes. The technique of using preflashes to get a proper exposure is still used in automatic flash modes.

8. Exposure value - Wikipedia

   en.wikipedia.org/wiki/Exposure_value

   The ratio t/N 2 could be used to represent equivalent combinations of exposure time and f-number in a single value. But for many such combinations used in general photography, the ratio gives a fractional value with a large denominator; this is notationally inconvenient as well as difficult to remember.

9. Rembrandt lighting - Wikipedia

   en.wikipedia.org/wiki/Rembrandt_lighting

   A studio portrait, showing the characteristic illuminated triangle on the darker side of the face. Rembrandt lighting is a standard lighting technique that is used in studio portrait photography and cinematography; it is also used in contrast with butterfly lighting [1] It can be achieved using one light and a reflector, [2] or two lights, and is popular because it is capable of producing ...