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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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Zoom Lens
A lens with a mechanical assembly of elements that permits the variance of the focal length and thus the angle of view, as opposed to a prime lens, which has a fixed focal length.
Zettabyte (zb)
A zettabyte is a unit of information equal to 1,024 exabytes or approximately 1,000,000,000,000,000,000,000 bytes.
Zoom Memory Function
The Zoom Memory function allows the camera’s zoom lens to be used in a way that simulates use of a prime lens, and is ideal for shooting at a preferred angle of view.
ZooM
Automatic Power Zoom feature of Nikon Speedlights. The zoom head is automatically adjusted according to the focal length of the lens in use.
Zoom Flash
A flash unit with a mechanism that adjusts the angle of coverage according to the focal length of the lens in use.
Zooming During Exposure
A technique in which the zoom ring of a lens is turned as the exposure is made. The technique creates radiating lines from the center of the frame and imparts a strong feeling of movement.