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February 13, 2006 |
A Prism Business Media Publication |
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Table Of Contents
 Just What is 1080i? Part 2
Matrox
announces Axio LE realtime HD/SD editing platform
VFGadgets.com launches lenslite LED system
Macrosystem Inc. announces HDV
Recorder
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Up Front
Just What is 1080i? Part
2
Steve Mullen
In the last HDV@Work newsletter we learned that "1080i" can
have horizontal pixel counts that range from 960 to 1920 -- a whopping
2:1 range. However, the one constant was that there were always 1080
pixels vertically. Alas, both vertical resolution and horizontal
resolution are not as high as these numbers suggest.
To convert the number of horizontal pixels to "horizontal lines of
resolution" we must consider the Kell Factor. The Kell Factor was first
measured by Ray Kell in 1934, who was working with an all electronic,
240-line, progressive video for RCA. About 36 percent of scanned lines
were lost. Hence, the Kell Factor in 1934 was defined to be .64. (This
is a number still used by many.) With more modern equipment, in 1940,
Kell re-defined the value to be .85. With HD, the factor typically used
today is between .90 and .95. (I employ values of .94 for horizontal
Kell and .95 for vertical Kell.) more>>
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announced Houses of Worship Educational Summit are only a few of the new
events at Expo '06, in Las Vegas, NV March 16 - 18. Go to www.nscaexpo.org to register.
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HDV News
Matrox announces
Axio LE realtime HD/SD editing platform
Matrox Video Products Group announced Matrox Axio
LE, a high-performance realtime HD/SD editing platform at the
breakthrough price of $4,495 US in North America. Matrox Axio LE will be
demonstrated at NAB 2006 in booth SL 1137.
Matrox Axio LE is the latest entry in the Matrox Axio family of products
that makes Adobe Premiere Pro the foremost realtime HD and SD editor for
demanding broadcast and postproduction environments. It features
no-render HD and SD finishing in compressed and uncompressed formats,
superior realtime color correction tools, advanced realtime effects, and
a full complement of analog and digital audio and video inputs and
outputs. more>>
VFGadgets.com
launches lenslite LED system
The lenslite 6000K white light source is a versatile,
lightweight, and portable LED ringlight system providing all the
benefits of solid-state illumination for drama, documentary, and ENG
cinematographers. Lenslite is developed by Gekko
Technology in the UK, the makers of kisslite, which launched in
2004.
The new lenslite is the perfect tool for serious operators of HDV and
the smaller generation of film and video cameras, providing a
lightweight and balanced, controllable beauty light source or fill,
combined with an integral filter tray housing. more>>
Macrosystem Inc. announces HDV
Recorder
Well known for its Casablanca editing hardware,
Macrosystem Inc. announces an HDV Recorder, the HDV Real Time Hard
Drive, reports EMediaLive. The unit stores and converts HDV
material for viewing on computer monitors via VGA and DVI. The details
are on Macrosystem's website here.
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