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White Balance (WB)
Under varying lighting conditions, (sunlight, fluorescent lighting etc) the perceived color of objects will
change. This is true for the human eye and also for the video camera. This happens because the color
spectrum of a light source varies according to its' temperature. A tungsten lamp for example operates at a
relatively low temperature of about 2800 K (~3000C) whereas the sun has an equivalent color temperature
of about 5500 K the (~5800C).
We typically classify light sources by their "color Temperature", which is a measure of the temperature of a
perfect black body that would radiate light with the same spectral (color) content.
As the color temperature of a light source increases, the spectrum of the emitted light moves from the red
towards the blue. Thus a piece of white paper viewed under a tungsten lamp would have a slightly reddish
hue, whereas when viewed under sunlight it would appear to be slightly blue by comparison.
Fluorescent lamps operate very differently from incandescent lamps, and can have color temperatures
ranging from 3000 K to 5000 K.
The White Balance control function is used to change the color settings within the camera so that white
appears white. There is an Automatic White Balance mode, in which the camera automatically adjusts
according to the scene content.
In addition to the automatic white balance, there are three fixed white balance settings, WB mode1, WB
mode2 and WB mode3. Mode 1 is user configurable, using the R-gain and B-gain controls within the control
panel, and can be used to give the desired color reproduction under specific lighting conditions. Modes 2
and 3 are preset for indoor (fluorescent lighting) and Outdoor (sunlight) use.
Using The Control Panel
Содержание MIPS
Страница 9: ...9 Viewer Software Installation Step 1 Click setup MIPS...
Страница 10: ...10 Step 2 Click Install Viewer MIPS Viewer Software Installation...
Страница 11: ...11 Preparing Setup MIPS Viewer Software Installation...
Страница 12: ...12 Step 3 Click Next MIPS Viewer Software Installation...
Страница 13: ...13 Step 4 Click Next MIPS Viewer Software Installation...
Страница 14: ...14 Step 5 Click Install MIPS Viewer Software Installation...
Страница 15: ...15 Step 6 Click Finish MIPS Viewer Software Installation...