GE Ca-Zoom PTZ 70 Operating Guide (en)

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Appendix F - Manual Image Control Features
Auto White Balance
This mode computes the white balance value output using the color information from the entire 
image.  It outputs the proper value using the color temperature radiating from a black subject 
based on a range of values from 3000K to 7500K as a reference.
One Push WB
Is a fixed WB mode that can be adjusted by the user.  It assumes the image is of a white subject 
occupying more than 1/2 of the image and adjusts the WB accordingly to the current lighting 
conditions.  OPWB data is lost when the camera is powered off and the camera returns to AWB 
on power on.
Manual Camera Control
The settings of these modes are lost when the camera is powered off and the camera returns to 
fully automatic operation on power on.
• 
Brightness
Adjusts both the Gain and Iris using an internal algorithm according to the brightness level 
set by the user.  Brightness is controlled by Gain when the image is dark and by Iris when 
the image is bright.
• 
Shutter
   adjusts shutter speed from 1second to 1/10,000sec in 22 steps
• 
Iris
   adjusts Iris from f1.6 (PTZ140) or  f1.8 (PTZ100 / PTZ70) to Close in 18 steps
• 
Gain
   adjusts Gain from -3 dB to 28 dB in 15 steps
Image Button 
Adjusts the internal reference brightness level used in the Full Auto mode in 15 steps.  This allows 
the camera to automatically adjust for changing lighting conditions while maintaining the selected 
brightness of the image.
Image Stabilization
This function helps obtain a stable image free of vibration caused by jarring movements.  For a 
vibration frequency of around 10Hz, correction is approximately 90%