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Troubleshooting (continued)
Symptom
The screen is too bright in night
mode
The iris does not operate in night
mode
The subjects appear distorted
When the flash is fired during
shooting, only the top or bottom of
the screen becomes lighter
The brightness changes cyclically
or the colors change, and horizontal
stripes can be seen passing across
the screen
When fine lines or cyclical patterns
are shot, flickering is seen or
coloring is added to them
Noise occurs in the audio input
• The aperture is set to open in night mode to prevent video voyeurism. Adjust the
brightness at the light source.
• Since this camera uses an MOS imaging device, the pickup timing differs slightly
at the top left and bottom right of the screen. This means that if a subject moves
quickly across the front of the camera, it may appear slightly distorted. This is
not a malfunction.
• With a MOS imaging sensor, the pickup timing differs slightly at 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.
• These phenomena (flicker) may occur under the illumination produced by
fluorescent lighting, mercury bulbs or other types of discharge tubes. In such
cases, we recommend setting the electronic shutter speed to 1/100 in regions
with 50 Hz power supply frequency, and to OFF in regions with 60 Hz power
supply frequency.
• 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 action.
• The following causes are possible.
- The camera, switching hub, or peripheral devices are not grounded.
- Power lines are running nearby.
- Equipment generating strong electric or magnetic fields (e.g., television and radio
antennas, air conditioning motors, power transformers) are located nearby.
If the problem cannot be resolved via movement of surrounding devices, use a
microphone equipped with an amplifier, or connect an audio output with low output
impedance.
201
Cause and solution
Reference pages
page 42
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page 8
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