PTZ Cameras Technology Showcase
Mar 17, 2011 12:00 PM, By Bennett Liles
A survey of the current crop of PTZ camera systems and their features.
Polaris USA upgraded its POL-27X-IPW with IR LEDs having a range of 160ft. and named the new model the POL-27XIR-IPW. The system is made for situations where wireless network connectivity is required using its internal wireless H.264 server. The camera features a digital day/ night IR cut filter and includes a standard video output connector so that it can be set up, framed, and focused locally using any video monitor. Generating a browser viewable picture, the Central Management Software can organize control of storage, data transmission, and other functions along with streaming video directly to a computer hard drive using an array of DVR features. The lens provides a 27X optical zoom, and there is a 16X digital zoom capability. The unit also features an alarm I/O and two-way audio capability.
A 1/4in. CCD camera with horizontal resolution of 520 TV lines on composite output, the VCC-DP9574N camera from Sanyo can make video down to 1.9 lux at F1.9. The unit has built-in motion detection and privacy masking functions along with an X2.6 motorized zoom pan-focus lens, JPEG image compression, five picture quality settings, 16 simultaneous user access, and IEEE 802.3af PoE support. Resolution settings range from 180x120 up to 720x240, and a maximum pan/tilt speed of 120 degrees per second. Additional features include a wide range of shutter speeds, a NO/NC alarm connection, RS-485 control, and character titling up to 16 characters. The camera also has a monaural audio output at a maximum -8dB on a 3.5mm mini jack.
From Sony, the SNC-RZ50N can output video in JPEG, MPEG-4, and H.264 along with providing simultaneous streaming in JPEG and MPEG-4 for wider network compatibility. A 26X optical zoom combined with day/night function and a 12X digital zoom gives the unit a wide surveillance range while Intelligent Motion Detection and Intelligent Object Detection allow it to track subjects within that area and detect objects that have been left in one place for a specified duration. Other features include electronic flash, voice alert, and CompactFlash, and PC card slots. The camera uses a 1/4-type Super HAD CCD that can deliver color pictures in light levels down to 2.2 lux. The video resolution is VGA in both MPEG-4 and JPEG modes with frame rates up to 30fps. The motion detection feature can trigger an alarm using the last 15 frames to perform motion analysis.
TOA Electronics designed the C-CC574 multifunction NTSC dome camera for indoor use and equipped it with a powerful 35X optical zoom and a 12X digital zoom. Capable of producing a picture in very low light conditions, the camera offers 540 line horizontal resolution along with 256 position presets, fast zooming, 360 degree per second panning speed, electronic image stabilization, backlight compensation, and day/ night operation in black/white mode. The system also features motion detection and privacy masking using up to eight areas. There are also eight alarm inputs and two contact closure ports for triggering external systems. The unit is powered on 24VAC. All of the TOA PTZ cameras include software, enabling confirmation of camera operation, menu-based settings and backup of settings data, easy titling, and camera firmware uploads.
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