Colorlight Calibration Pro User Manual page 91

Reset the correct camera parameters on camera adjustment page.
Shake:
1. Make sure shooting system stability.
2. Close the lens and the camera stabilization function.
Q: Screen brightness/saturation reduced after calibration.
A: Brightness calibration makes the screen evenly by reducing the lighter point
brightness, thus the screen brightness will decline after calibration.
Chroma calibration makes the screen evenly by reducing the saturation, and it
contains the function of the brightness calibration, thus the screen brightness and the
saturation will decline after calibration.
Q: Screen appears the noise after calibration.
A: 1. Please check the shooting quality. Check it like this: click [ open... ] in the
[ Photos ] page, then using brightness extract, grey-scale map or histogram function
to manual analysis photos whether there is out of focus, overexposure, underexposure,
shake, etc.
2. Partition is so large that leads to the dense lamps and increase the sampling error.
3. If the gamma table that referred by simulator is not the same as the target, please
send parameters to receiver cards.
Q: Screen appears horizontal band after calibration.
A: 1. Shutter speed is too fast, you need to set the shutter slower, and reduce the
screen brightness darker to maintain the brightness at the same time.
2. The refresh rate is too low, you need to increase the refresh rate.
Q: Screen appears moire pattern.
A: The phenomenon is caused by the interference system error of the lamp frequency
and the pixel frequency.
The system error is divided into two parts, the position error and the brightness
error.
Solutions:
1. Confirm the frame was filled with images.
2. Decreasing partition and increasing focus (You need to re-photometry after
adjusting the focus).
3. Decreasing focus slightly (You need to re-photometry after adjusting the focus),
Calibration Pro User Manual
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