The camera features three, 1/3-inch 2.07 effective megapixel CMOS sensors, capturing full 1920x1080 images. The imagers provide 12-bit processing, F12 sensitivity (50Hz) and excellent signal-to-noise ratio to produce superior colour reproduction. Continuing JVC’s commitment to native file workflows, the GY-HM850 records HD or SD footage as Final Cut Pro (.MOV), XDCAM EX (.MP4), AS-10 (.MXF), AVCHD (.MTS), or H.264 (.MOV) files for compatibility with most major NLE systems. Footage can be recorded using MPEG-2 or H.264 compression at a variety of bit rates, frame rates, and resolutions. Dual codecs offer simultaneous recording of a full HD file on one memory card and smaller, web friendly H.264 files on the other. Plus, a new H.264 Extreme High Quality (XHQ) recording mode, commonly used in HD SLRs, offers virtually lossless H.264 50 Mbps recording.
Dual SDHC/SDXC card slots allow simultaneous recording (for instant client copy/backup) or relay recording (for continuous shooting) to low cost, non-proprietary media. During simultaneous recording, one card can act as a continuous backup that overrides the pause function triggered by the operator. Relay recording allows virtually unlimited recording capability in the field.
The 800 Series cameras significantly expand on the live HD streaming and file transfer capabilities introduced in the popular GY-HM650 mobile news camera. JVC’s exclusive dual codec design allows the new cameras to transmit live HD footage or transfer files in the background while users continue to record footage in their normal workflow. When paired with a GSM modem or Wi-Fi adapter, which is connected directly to the camera via USB, the camera transmits footage to a facility in real time. JVC provides different stream protocols to maximize the streaming results: UDP, TCP, RTP/RTSP, ZIXI. The Advanced Streaming Technology (AST) feature provides content-aware error correction, bandwidth shaping, and real-time feedback of streaming status.
The camera provides secure FTP file transfer on location, as well as live monitoring and extensive camera and lens control via Wi-Fi from a smartphone (iPhone, Android), tablet (iPad, Android), PC or Mac. For broadcasters who use metadata, a built-in GPS allows location information to be recorded. Plus, metadata can be edited on a smartphone or tablet and transferred to the camera via Wi-Fi. The GY-HM850 is also compatible with Advanced Streaming Services, powered by Zixi, for reliable live content delivery.
The GY-HM850 includes genlock and time code terminals for multi-camera setups, HD/SD-SDI out, HDMI out, 3.5mm stereo headphone jack, and a four-channel audio system with stereo AUX inputs and two XLR mic/line inputs with phantom power. Other features include 12 assignable user buttons, 10-second Pre Rec (retro cache), focus assist, interval recording for time lapse footage and variable frame rate recording for over/under crank effects.