JVC ProHD GY-HD251 Specifications page 7

analogue component or HD SDI, which also carries embedded audio
and is therefore ideal as a feed to a video server, HD switcher or
microwave link.
Uncompressed 1080i/50 live output via HD SDI and
component
One very important reason why JVC developed the progressive form of
HDV was the ease and speed of converting a progressive signal to
other formats, irrespective of whether up- cross- or down-converting.
The conversion is always real time, because the time-consuming
complexity of de-interlacing is not required. The conversion of 720p to
1080i is relatively simple, and therefore fast, hence the live
uncompressed 1080i output via the HD SDI port. Similarly, the
GY-HD251 can be set to output 1080i/50 from recorded 720p/50
footage, whether on MiniDV cassette or on DR-HD100's hard disk
drive. The HD SDI signal also carries embedded audio.
Professional functions
Compact shoulder mount
JVC's ProHD camcorders are the first fully professional HD camcorders
to feature a compact design and shoulder mount. Like its
predecessors, the GY-HD251 offers excellent mobility and enhanced
usability, while its flexible range of ergonomic adjustments ensures that
any camera operator, regardless of stature or physique, can support the
camcorder firmly and, above all, comfortably.
Professional functions and switch layout
In addition to the Full Auto Shooting to handle difficult or variable
lighting environments, the GY-HD251 is equipped with an array of
functions that give professionals creative flexibility. These include,
zebra, gain, white balance and full shutter control. Also, the
GY-HD251's switches have been positioned where professional
camera operators expect them to be. Shooting is intuitive, precise,
easy, and error-free, because there is no learning process to go
through. The GY-HD251 is the ideal camera for any assignment.
Detachable 230,000-pixel LCD colour viewfinder
The viewfinder's eyepiece can be moved
backwards and forwards and can also be
adjusted laterally for left or right eye shooting,
so the viewfinder can fit any operator
comfortably. JVC's own developed Focus
Assist control ensures fast and easy
focusing. It has 3 settings, (high, medium &
low) depending on the type of subject in
view. To make focusing even easier, a black
and white mode is available. Stronger
contrast and reduced colour noise make
visualisation and composition easier in this mode and put less strain on
the eyes so you can shoot for longer periods. You can also keep using
the eyepiece viewfinder even when using the LCD display. If not
required, the eyepiece viewfinder may be detached.
3.5" LCD display panel
This 250,000-pixel 3.5" colour TFT LCD monitor provides a high-
resolution image during shooting and playback. JVC's own developed
Focus Assist control (see this page) ensures fast and easy focusing. A
push button selects three display modes:
1. Video only
2. Video images with text information overlay including time, status,
mode and other data are shown on the screen.
3. Only information such as time, status, mode, time code, audio levels
and other data is shown on the screen.
Various audio-related functions
When colour bars are output, an audio reference level (test tone) can
also be output if required. This is requested via the menu. The audio
reference level can be set at -12 dB or -20 dB as required. To minimise
extraneous noise picked up by the microphone, a "wind cut" function
is provided.
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