Panasonic AWHE60HE Webcam User Manual


 
49
Operating
Instructions
Troubleshooting
(continued)
Symptom Cause and remedial action
Reference
pages
When the flash is fired
during shooting, only
the top or bottom of
the screen becomes
lighter
p With a MOS image sensor, the shooting timing differs slightly
between the top left and bottom right of the screen.
This means that when the flash is fired, the bottom of the screen
will become lighter in the field concerned and the top will become
lighter in the next field.
This is normal and not indicative of any problem.
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The brightness
changes cyclically or
the colors change,
and horizontal stripes
can be seen passing
across the screen
p These phenomena (flicker) may occur under the illumination
produced by fluorescent lighting, mercury bulbs or other types of
discharge tubes.
In cases like this, it is recommended that the electronic shutter
speed be set to 1/100 in areas where the power line frequency is
50 Hz and that the electronic shutter be set to OFF in areas where
the power line frequency is 60 Hz.
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When fine lines or
cyclical patterns are
shot, flickering is seen
or coloring is added to
them
p This phenomenon occurs because the pixels are arranged
systematically on each image sensor. It is noticeable when the
spatial frequency of a subject and the pixel pitch are brought into
proximity so change the camera angle or take other such action.
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