DDF4820HDV-DN-IM/-SM
www.dallmeier.com
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Flip
By using the flip function, the image in the camera can be mirrored (flipped) horizontally,
vertically or on both axes simultaneously.
This provides flexible installation options for desktop, wall or ceiling applications.
exposure/WB
To reproduce accurate colours, regardless of the prevailing light sources and colour tem-
peratures (measured in Kelvin), a correct white balance is required.
For this purpose, the camera provides the following white balance modes:
•
Auto
ATW (Auto Tracking White Balance):
This white balance setting automatically determines and permanently readjusts the
white balance value output using colour information from the entire scene in order to
continually compensate for colour temperature changes in varying light conditions.
For best results, at least one white object (as reference white) should be within the
scene that is to be captured.
The use of ATW is especially recommended for scenes with permanently varying light-
ing situations/colour temperatures, such as indoor scenes with artificial light sources
and incident daylight.
•
one Push
AWB (Automatic White Balance):
The “One Push” white balance value is a fixed measured value which is only readjusted
at user request (
Apply
button), assuming that a white or neutral grey object (as refer
-
ence value), in correct lighting conditions, is located in more than a half of the entire
image.
•
Manual
MWB (Manual White Balance) for manual adjustment of red, green and blue gain (see
below).
Red Gain
Manual adjustment of red gain with white balance mode
Manual
, 256 steps (0 – 255).
Green Gain
Manual adjustment of green gain with white balance mode
Manual
, 256 steps (0 – 255).
Blue Gain
Manual adjustment of blue gain with white balance mode
Manual
, 256 steps (0 – 255).
Slow Shutter Limit
For a proper exposure, the camera automatically determines the best combination of
shutter speed, aperture and signal gain.
The slow shutter limit thereby defines the maximum allowable automatic exposure time
(electronic shutter speed).
As soon as the set shutter limit has been reached, the automatic exposure (AE) is exclu
-
sively controlled by the automatic iris (aperture) control and/or the automatic gain control
(AGC).
