Specifications

88
Digital Zoom
The digital zoom is a function used to cut out a part of image from the high-resolution image. The
following image sizes and magnifications can be used for digital zoom shooting.
Table 2.64 Digital Zoom
Magnification 1/4VGA VGA SVGA XGA Quad-VGA UXGA
x 1.5 Yes Yes Yes Yes No No
x 2.0 Yes Yes Yes No No No
Note:
If shooting is performed in one of the modes marked as “No” in the table, shooting is made
without digital zoom (“x 1.0”) effect.
Setting the property of the DirectShow relevant to the Digital Zoom is as follows.
Set(CameraControl_Zoom, SetValue, CameraControl_Flags_Manual)
Values to set are as follows.
10
: x 1.0.
15
: x 1.5
20
: x 2.0
White Balance
The following modes of the white balance can be set.
Table 2.65 White balance
Auto
Shooting in outdoor in cloudy sky (color temperature = 6500K)
Shooting under fluorescent lamp (color temperature = 5000K)
Shooting under incandescent lamp (color temperature = 2850K)
Note:
If the desired image is not captured in “Auto” mode of white balance, specify an optimum white
balance mode consistent with the light source. However, even if such the optimum white balance
mode is set, other light sources reflected by walls, etc., may affect the color temperature causing
the image to be displayed in an incorrect color tone.
Setting the property of the DirectShow relevant to the White Balance is as follows.
Set(VideoProcAmp_WhiteBalance, SetValue, SetFlag)
Flags to set are as follows.
VideoProcAmp_Flags_Auto
: Auto white balance
VideoProcAmp_Flags_Manual
: Fixed white balance
Values for fixed white balance are as follows.
6500
: In outdoor.
5000
: Under fluorescent lamp.
2850
: Under incandescent lamp.