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IIncandescent

Incandescent light refers to the illumination produced from typical household light bulbs (tungsten bulbs) incorporating a heated tungsten wire filament. The light produced is “yellow” or a warmer-than-daylight white balance. Setting a camera’s white balance to Incandescent will correct for the yellow cast.

In terms of color temperature, incandescent light generally falls between 2500 and 3500 degrees Kelvin.

Color Temperature

Light Source

1000-2000 K

      Candlelight

2500-3500 K

      Tungsten Bulb (household variety)

3000-4000 K

      Sunrise/Sunset (clear sky)

4000-5000 K

      Fluorescent Lamps

5000-5500 K

      Electronic Flash

5000-6500 K

      Daylight with Clear Sky (sun overhead)

6500-8000 K

      Moderately Overcast Sky

9000-10000 K

      Shade or Heavily Overcast Sky

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Optical Low-Pass Filter
A filter fitted in front of the image sensor to reduce moiré by filtering ultraviolet and infrared light.
Optical Viewfinder
The window in which the photographer frames the subject and checks focus. Find out more.
Overexposure
The result of the film or image sensor receiving too much light.
Orthochromatic Filter
A green or yellow-green filter used with black-and-white film, it compensates for the difference between the color sensitivity of film and the relative luminous efficiency of the human eye for more natural-looking pictures.
Open Flash
Refers to firing a flash unit with the shutter open. In long time exposures (at Bulb or Time setting), repeatedly firing a the flash creates a multiple-exposure, stroboscopic effect.
Optical Storage
See storage device
Optical VR
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Overlap Servo
An autofocus method that provides continuous focus detection and calculation as the lens is being driven, allowing you to perform faster, more precise autofocusing, especially with moving subjects.