GE KTC-810C User Manual - Page 9

KTC-510/515/540C/810C/815C/840CE Setup 1.1.1 WHITE BALANCE (ATW/AWB) ATW mode (default) In the ATW mode, the color temperature is being monitored continuously, and the white balance is set automatically by an internal micro-controller. The operating color temperature range is from 2500 to 9500 K. AWB mode When the switch is set to AWB (conventional white balance), a camera using white as its reference automatically adjusts the content of blue and red in the picture, depending on the scene, to provide a picture with balanced color content. If the color temperature of the scene is continuously changing, the camera can lose its color reference; in this case, switch the camera to ATW. 1.1.2 BACKLIGHT COMPENSATION (BLC ON) This auto BLC is a digital light-level control system. It is activated automatically by screen histogram (contrast) and 225-area window weighting integration. This controls iris gain and white balance simultaneously so that a clear object with adequate light level can be optimized. Central Window Weighted Average Backlight Compensation This method is ideal when the main subject is fixed within the screen. Histogram Backlight Compensation This method is ideal when the main subject moves within the screen. The combination of two types of backlighting makes it easier to arrange backlight compensation operation to match the imaging conditions and installation location. Note: Compensation might be insufficient when the background is extremely bright. 1.1.3 GAMMA CORRECTION (r = .45 / r = 1) Gamma correction is an electronic correction within the camera circuitry that matches the brightness level seen by the camera with the brightness level displayed on the monitor. This adjustment enables the monitor to display the correct level of contrast. The standard setting is .45 (default). The manual switch should be used only if the controls on the monitor are not giving sufficient adjustment. 1041080A / March 2003 9