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Top JVC Everio GZ-HD7 Camcorder Reviews
Videomaker wrote a review on the
JVC Everio GZ-HD7 and found the HD7 to have "average" video
performance.
Camcorder Info wrote a review on the
JVC Everio GZ-HD7 and said that the camcorder is "great in
many ways." They thought the HD7 was a good deal based on
price, but they also said some other camcorders outperformed it
in certain areas.
JVC Everio GZ-HD7 News Release Summary:
JVC Develops First Consumer Full HD Recording 3-CCD Camcorder
System Featuring 16:9 Progressive Scan CCDs
Broadcast HD Camera Fujinon Lens Also for First Time in Consumer
Camcorder
JVC has developed the first consumer full High-Definition 3-CCD
camcorder capable of shooting and recording full HD images (1920
x 1080i). The technology will be offered in the new HD Everio
GZ-HD7 to be available in April 2007, marking the technology’s
first use in a consumer camcorder. The camcorder also features a Fujinon lens used in broadcast video cameras, now being used in
a consumer camcorder for the first time. The 3-CCD system offers
superior color reproduction.
Amid rapidly rising market needs for full HD equipment, JVC
borrowed from its other high-quality, high-resolution image
technologies developed over many years of camcorder research to
develop this system, including its progressive CCD camera
system, 3-CCD camera system, super high-end processor, and new
HD Gigabrid high-resolution signal processing engine.
1. Full HD Images Created by 16:9 Progressive Scan CCDs
recorded in full HD 1920 x 1080i to Hard Drive Camcorder for
First Time (as of January 2007) in Consumer Industry.
JVC has developed the industry’s first (as of January 2007)
high-quality full HD 3-CCD camcorder system for use in a
consumer camcorder. It uses three 1/5-inch 16:9 progressive scan
CCDs designed for HD use in a diagonally offset pixel
configuration to generate the high resolution image for
recording in full HD, explained in the technical detail section
later in this article.
Designed for HD use, the 1/5-inch 16:9 progressive scan CCD has
large pixels measuring 3.28 microns x 3.28 microns, roughly
twice the size of pixels in JVC 2-megapixel camcorders, for
greater modulation transfer function (MTF) and sensitivity
values. The CCD aspect ratio was tailored to16:9 for full HD
recording in a hard drive camcorder for the first time at JVC.
The compact camera unit produces high-resolution images that are
recorded in full HD 1920 x1080i resolution.
2. First Use (as of January 2007) of Broadcast HD Video
Camera Fujinon Lens in Consumer Camcorder.
The highly regarded Fujinon lens used in the JVC system is also
used in broadcast HD video cameras. Three aspherical lens
elements provide the superior optical performance over the
entire zoom range suitable for an HD system. The 3-CCD system
has minimal drop off in F. No. because one of the aspherical
lens elements is made of indexed glass. The resulting minimal F.
No. is F1.8 wide open and F1.9 for telephoto, while keeping the
lens unit small.
In addition, the lens surface is coated with a new Electronic
Beam Coating (EBC) as used for broadcast HD lenses. In this
process, vaporized chemical material is deposited onto the lens
surface with an electronic beam inside a vacuum evaporation
device. This coating greatly reduces degradation caused by
reflected light on the lens surface, leading to greater light
transmission. This reduces detrimental flaring and ghosting as
much as possible for black levels.
As it does in the acclaimed and award-winning Everio GZ-MG505
3-CCD hard disk camcorder, JVC adjusts the GZ-HD7’s three CCDs
precisely in the 3-CCD prism on each axis of a 6-axis color
matrix before mounting them firmly in place with the high
precision appropriate for an HD camera.
Newly Developed Progressive Scan CCD Overview
Image size: 1/5” Diagonal
Aspect ratio: 16:9
Pixel size: 3.28 microns x 3.28 microns
Total number of pixels per CCD: 1016 x 558, approximately
570,000 pixels
Number of effective pixels per CCD: 976 x 548, approximately
530,000 pixels
JVC Uses Pixel Shift Technique
The Red and Blue imaging CCDs are shifted a half-pixel both
horizontally and vertically relative to the Green imaging CCD.
Because the pixel-shift system uses progressive scan CCDs,
signals are processed first as 1920 x 1080p progressive signals,
then converted to 1920 x 1080i interlace signals for recording.
As a result, the system records a higher resolution HD image
than the interline (IL) CCD system
Pixel summary of recorded images
Total pixels: 2032 x 1116 (equivalent to 2.27 million pixels)
Number of effective pixels: 1952 x 1096 (equivalent to 2.14
million pixels)
The analog front end (AFD) uses 14-bit signal processing to
produce HD high-quality resolution.
JVC developed a new HD-specific processing circuit to process
high-density interpolation signals for brightness and color. The
circuit separates low frequency and high frequency components of
the brightness signal to create an image with exceptional color
reproduction and less moiré.
About JVC Company of America JVC Company of America,
headquartered in Wayne, New Jersey, is a division of JVC
Americas Corp., a wholly-owned subsidiary of Victor Company of
Japan Ltd., and a holding company for JVC companies located in
North, Central, and South America. JVC distributes a complete
line of video and audio equipment, including high definition
displays, camcorders, DVD players and recorders, satellite
systems, home and portable audio equipment, mobile entertainment
products and recording media. For further product information,
visit JVC’s Web site at http://www.jvc.com or call 800-526-5308.
JVC Everio GZ-HD7 Best Price:
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