White Balance Adjustment - WolfVision VZ-C32 3 Bedienungsanleitungen

White Balance Adjustment

Correct white balance adjustment is important for an exact color reproduction!
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 the Visualizer's light and an external lightbox (bottom light) or if the room light is turning
on or off.
The standard setting of the Visualizer is "Auto Tracking" white balance.
is continuously adjusted automatically.
For an exact white balance, at least 10% of the recorded image should be white.
For a precise fixed white balance adjustment use the "One Push" white balance. This can be done by
pressing the assigned PRESET key
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).
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 a 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
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, zoom to the smallest picture size until there is only white on the screen and
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, zoom out
until the whole x-ray is picked up and 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,
the monitor or projector should be checked.
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.
Lightbox (optional)
When a lightbox is used, the top light of the Visualizer should be switched off with the assigned
PRESET key (LIGHT).
Using a bottom light has the disadvantage that the Synchronized Lightfield of the top light no
longer marks the pick-up area of the built-in camera.
The recommended lightbox for the Ceiling Visualizer is the WolfVision Lightbox LB-38.
Freeze / Live to Freeze Comparison (two display devices)
The current image can be captured by pressing the FREEZE-key (#35).
The DVI- and RGB outputs of the Visualizer can be set to output different signals. This can be used for a
"Live Picture to Freeze Picture Comparison" on two monitors or screens with just one Visualizer.
While one monitor or screen displays a "freeze" image that can be used for comparison, another monitor or
screen can be used for presenting the live image from the Visualizer.
The settings of the FREEZE function can be changed in the on-screen menu (see page 16).
(LIGHT) for 2 seconds. When the white balance is stored an on-screen
10
IMPORTANT
This means that the white balance
screen and press the