Sony XCU-CG160 Technisch handboek - Pagina 32
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Shading detection setup procedure
1
As shown in the figure below, assume an
environment in which the brightness is not uniform
due to an uneven light source. In peak detection
mode, shading correction adjusts the brightness
level as the target level.
Fix the lens and lighting conditions.
Camera
A colorless and uniform
photographic subject
Brightest area
= target level
2
Adjust the exposure time and other parameters so
that the target level is about 50%. On color cameras,
adjust the white balance.
3
Performs shading detection by selected mode.
> ShadingDetectionMode =
ShadingDetectionByPeakValue or
ShadingDetectionByAverageValue
Read the status to determine whether the calculation
is finished.
Light source
Correction
> ShadingDetectionMode (readout)
ShadingDetectionByPeakValue or
ShadingDetectionByAverageValue (executing)
ShadingDetectionOff (exit)
The value ShadingDetectionOff is returned when
finished.
4
Check the shading correction effect.
> ShadingPatternCheck
5
Save the shading pattern.
>ShadingPatternSelect = 0
> ShadingPatternSave = ShadingPatternSaveOn
Read the status to determine whether the save
operation is finished.
> ShadingPatternSave (readout)
ShadingPatternSaveOn (executing)
ShadingPatternSaveOff (exit)
The value ShadingPatternSaveOff is returned when
finished.
6
Read out the saved pattern.
>ShadingPatternSelect = 0
> ShadingPatternLoad
Note
Perform the shading detection with the trigger mode set
to off.
Peak detection mode
ShadingDetectionMode =
ShadingDetectionByPeakValue
The subject appears brighter.
Average value detection mode
ShadingDetectionMode =
ShadingDetectionByAverageValue
32