JVC Professional has launched its new 4Kcam (Ultra HD)
product line, including two new large sensor cameras (the GY-LS300 and GW-SP100 - dealt with elsewhere), and two smaller models: the GY-HM200, which includes HD
streaming and an SDI output; and the compact GY-HM170. All four should arrive
early in 2015.
The GY-HM200 (pictured above) and GY-HM170 are essentially the same, but the
HM200 will be the one to choose if you need to deliver breaking stories for
broadcast or the web via WiFi, internet or mobile (3G or 4G) connections, or if
you are working with other (SDI-based) broadcast equipment.
GY-HM170 compact camcorder
The entry-level JVC GY-HM170 offers “professional control layout”
and comprehensive video profile settings. It records 150Mbps Ultra HD (3840x2160
resolution at 25p for 50Hz countries or 29.97p or 23.98p for 60Hz regions,
rather than true 4K, the cinema format, which would be 4096x2160) as H.264
files.
It can also record 4:2:2 HD (in H.264 at up to 50Mbps or AVCHD at up to
28Mbps) or SD (AVCHD) video
in a variety of resolutions and frame rates (24p to 60p). It has dual SDHC/SDXC
slots for simultaneous (HD/SD or HD/Proxy), backup or continuous recording, and
requires: an SDXC (UHS-I Speed Class3) card for UHD; a Class10 card for 50Mbps
HD; a Class6 card for .mov H.264 files; and a Class4 for AVCHD.
It uses a single 1/2.3-inch back side illuminated CMOS image
sensor with 12.76 million pixels (9.03MP active)
Other features include: an integrated 12x zoom lens with optical
image stabiliser and two ND filters (1/4, 1/16); a built-in stereo microphone
and 3.5mm audio input; wired remote control support; 9 user-assignable button
functions; and live 4K UHD output via its HDMI port.
The F1.2 (wide) to F3.5 (tele) lens goes from 29.5mm to
354mm (35mm equivalent). For use in HD, there is also a dynamic zoom that
combines the optical zoom with pixel mapping to create a seamless and lossless
24x zoom.
Both cameras also have a 3.5-inch colour LCD display (920K
pixel) and 0.24-inch colour viewfinder (1.56M pixel), both with smart focus
assist function.
The GY-HM170 comes with a BN-VF823U 7.2v battery and 12v AC
adapter, and has a power consumption of about 8.1W (with VF in 4K REC mode,
default setting). It weighs
about 1.11kg (including battery), and measures: 153mm (W) x 112mm (H) x 299mm (D).
GY-HM200 live streaming camcorder
The JVC GY-HM200 adds an SDI output (one BNC port), plus a USB Host
(Network) connection, as well as the Device (mass storage) USB port the HM170
has. This means it can support plug-in 3G/4G cellular modems, WiFi and LAN
adapters for live streaming (although not at 4K), FTP file uploads, and remote
control/remote viewing/metadata editing. As the HD-SDI output is 3G (3Gbps)
only, the 4K output is only via HDMI.
It is JVC’s most affordable streaming camcorder and can
stream instantly to Ustream or other destinations. The live video streaming
uses the RTMP, MPEG2-TS/UDP, MPEG2-TS/TCP, RTSP/RTP and Zixi protocols, at a
bitrate of between 0.2Mbps and 8Mbps, at a resolution of 1920x1080, 1280x720,
720x480 or 480x270.
JVC’s dual-codec Advanced Streaming Technology is compatible
with Ustream, Zixi servers, the Wowza Streaming Engine, and hardware decoders.
Zixi’s Advanced Streaming Technology provides content-aware error correction
and bandwidth shaping, while the camcorder offers real-time feedback of signal
and streaming status in the viewfinder.
The HM200 also adds two mic/line switchable XLR audio inputs
with 48v phantom power in the integrated handle, which has a hot shoe and
dedicated microphone mount.
It comes with the handle unit and an SSL-JVC50 7.4v battery
(its power consumption is 8.3W with VF and LCD monitor), plus AC adapter. It
weighs about 1.55kg (including battery), and measures: 135mm (W) x 190mm (H) x 263mm (D).
By David Fox
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