Hitachi HV-F31CL Operation Manual page 32

3-ccd color camera
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(10) AUTO SHADING
Chromatic shading due to lens aberration or light unevenness can be automatically compensated.
NOTE:
1. When using a camera for the first time or replacing the lens, execute shading correction.
2. When using under the special type light source, for example fluorescent, mercury, etc., a flicker can
prevent white balance adjustment or shading correction. In such cases, adjust the shutter speed to
minimize the flicker before white balance adjustment or shading correction.
-OFF-
Set white shading compensation to OFF.
Setting value 200220DF h
-Shading mode-
LUMINANCE
COLOR
FLAT
In the case that shading is extreme or light variation random, compensation error can occur. Adjust uniformity
of the light source.
: Auto shading compensation operates to maintain uniform vertical level for the RGB video
signals. Use with microscopes and other uniformly illuminated equipment.
Setting value 280100F3 h
: Auto shading correction operates to minimize vertical color irregularity in the image.
Use for non-uniformly lit general-purpose image material.
Setting value 280104F3 h
: Auto shading compensation operates to maintain uniform RGB video signal level for the
full screen. Use with microscopes and other equipment when peripheral shading is of
concern.
Setting value 280108F3 h
18

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