Vitek VTD-A4F/IWM User Manual page 15

osD operaTion
Adjust from 0~20 by using joystick left or right.
Adjust from 0~20 with 0 being the left most area.
Adjust from 0~20 with 0 being the top area.
Adjust from 0~20 with 0 being the smallest area.
Adjust from 0~20 with 0 being the smallest area.
This function extends the gain range of the screen that is useful if
the camera takes a simultaneous picture of both indoor and
outdoor. It improves contrast of the picture in outdoor scenery as
well as indoor. Video image is processed from two images by dual
shutter (long and short shutter) in a eld to provide the best
dynamic range. Highlight area is compensated by the short shutter
and dark area is compensated by the long shutter. Final video may
have less contrast compared to the conventional camera which
does not have WDR function.
14
black