WolfVision VZ-C32 User Manual - Handbuch (Seite 12)

IMPORTANT
Correct white balance adjustment is important for an exact color reproduction!
This means that the
white balance is continuously adjusted automatically.
For an exact white balance, at least 10% of the recorded image should be white
(measurement area is the center of the image).
For a precise fixed white balance adjustment use the "One Push" white balance. This can
be done by pressing the assigned PRESET key
for 2 seconds. When the white
balance is stored an on-screen message appears. Setting a "One Push" white balance
switches off the "Auto Tracking" mode (When the unit is switched off and on again the "Auto
Tracking" mode will be reactivated).
For specialists: The Visualizer can be switched between "Auto Tracking", "One Push" and "Manual"
white balance mode in the on-screen menu (see page 16). If you work with negative transparencies
and a light box, use a blank (black in the image) part of the negative film for white balance adjustment!
The "one Push" white balance will be separately adjusted and stored for top light and external light.
Each time the lighting condition changes, the Visualizer's camera must readjust its white
balance, in order to optimize the color reproduction. The lighting condition (color
temperature) changes, for example, if changing between Visualizer's light and an external
lightbox (bottom light) or if room light is turning on or off.
The standard setting of the Visualizer is "auto-tracking" white balance.
(LIGHT)
Normally there is no need for a manual white balance adjustment. However, if the colors on
the screen still appear to be wrong, the white balance can be adjusted manually (one-push):
Hints to perform an One-Push white balance:
Top light: Zoom in on a white object (i.e. a sheet of paper) until there is only white on the
screen, press the assigned PRESET key (LIGHT) for 2 seconds.
Lightbox with transparencies: Turn off the light of the Visualizer with the assigned
PRESET key and switch on the lightbox. Remove everything from the light box and zoom
to the smallest picture size until there is only white on the screen, press the assigned
PRESET key (LIGHT) for 2 seconds.
Lightbox with x-rays: Turn off the light of the Visualizer and switch on the lightbox. Place
an x-ray on the light box and zoom out until the whole x-ray is picked up, press the
assigned PRESET key (LIGHT) for 2 seconds.
Please note: False colors can also be due to wrong color settings of your projector or
monitor. It is recommended to adjust the white balance of the Visualizer at first and if the
results are still not satisfactory, monitor or projector should be checked.
White Balance Adjustment
10