JVC GR-HD1 Information page 14

* Would 3 CCDs be superior to 1 CCD?
For absolute picture quality, yes. But there are practical
trade-offs. 3 CCDs would provide superior resolution for same
density of CCD. However, the HD 3 CCD camera would be
larger, heavier and draw more power which requires a larger
battery. The HD 3 CCD camera would also cost more.
* How well does the camera handle fast moving objects?
In its HD mode, the GR-HD1 provides 30 progressively
scanned frames per second. For slow moving objects,
the motion appears smooth. For faster motion, some judder
may be noticed. This gives a feeling similar to film, which
captures at 24 frames per second. If motion judder is
a problem, the camera can be switched to 480/60P
(SD mode), which provides 60 progressively scanned frames
per second. While the resolution is less than HD mode, it is
still substantially higher than NTSC 480i video.
There are a few rules of thumb for shooting at lower frame
rates like these. For objects in motion with respect to a video
long exposure times will cause blurring of moving elements
that the viewer is watching, and short exposure times will
cause strobing of moving elements that the viewer is not
watching tracking. Exposure time should be chosen depending
on scene content, and depending on what elements in the
scene are likely to be watched by the viewer. Some simple
techniques like following action moving in the foreground, etc,
will tend to minimize the strobing feeling, if one uses higher
shutter speeds.
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* How does the picture quality of the GR-HD1 compare
with a comparably priced professional 3 CCD hand held
NTSC camera?
It depends upon the camera; they really are different!
Compared with the GR-HD1, JVC's Pro division makes
the GY-DV300U which has extremely good color reproduction,
highlight handling, shadow reproduction, and sensitivity.
However the GR-HD1 has higher recordable resolution in both
the horizontal and vertical direction. Compared with other
3 CCD hand helds, there is quite a range of performance.
Some will have attributes similar to the GR-HD1 (even though
they are 3 CCD), but with much lower resolution.
Can the GR-HD1 produce 24P (progressive frames/sec.)
just like film?
In HD mode, the GR-HD1 produces 30 progressive frames per
second. While this is not exactly 24P, it gives the visual feeling
very similar to the motion of film.
How can I play back a tape produced on the GR-HD1?
Can I use a DV VCR? Can I use any other type of deck?
Of course, tapes can be played back by the camera itself.
If the tape was shot in the 720P (HD) or 480P (SD) modes,
it cannot be played back on a standard DV VCR. Tapes shot in
the 480I (DV) mode are completely compatible and can be
played back on any DV VCR. In addition, tapes can be dubbed
to a JVC HD DVHS VCR via the firewire connector.
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