Hitachi HV-D20P, Operation Manual

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4
Cleaning
A photographer’s blower or lens brush can be
used for clearing dust from the lens and optical
filters.
Wipe dust from the case with a soft dry cloth. If
soiling is severe, moisten the cloth with a
solution of neutral detergent. Afterwards, wipe
the cover with a dry cloth.
Do not use petroleum distillates, alcohol or spray
type cleaners.
Transportation
Remove the lens (install lens mount cap) and
other attachments. Pack the camera carefully
in its original or equivalent container. Use
ample cushioning to protect the camera from
physical shock.
CCD properties
The following phenomena are inherent to a
charge coupled device imaging element and do
not indicate malfunction.
1) Smear and blooming
Vertical bands are visible when a strong light
enters the scene. Adjust the camera aiming
direction carefully to avoid strong direct or
reflected light.
2) Fixed pattern noise
High ambient temperature can cause fixed
pattern noise to appear throughout the scene.
3) Moire
Interaction between patterns can produce an
additional "phantom" pattern to appear. The
CCD picture elements (pixels) are arranged in
a pattern, which can interact with a pattern
in the scene (e.g., a performer wearing a finely
striped necktie) to result in a Moire pattern.
The effect should be considered when
selecting costumes, props and other scene
elements.
4) Ghosting
Strong direct or reflected light near an object
of interest can cause ghosting of the object to
appear in the picture. The effect is more
obtrusive with certain iris settings and lens
types. Select the scene layout and camera
pointing direction carefully in order to avoid
this effect.