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.
The market for PTZ cameras has exploded over the past few years, and from this has emerged a huge array of styles, sizes, and capabilities. With analog and IP models in high demand, the ability to match the model to the application has been perfect for production in churches, videoconferencing and monitoring in schools, and for security applications everywhere. Here is a survey of the current crop of devices and their features.
For indoor surveillance applications under a wide range of lighting conditions, Acti Corp. offers the ACM-8211 1.3-megapixel IP PTZ camera featuring 1/3in. Micron progressive scan CMOS, day and night function with a mechanical IR cut filter, selectable MPEG-4 SP/M-JPEG compression, and multistream capability with variable frame rate in the same compression. The camera supports twoway audio and provides hardware three-window motion detection and digital input/output. Power may be supplied by an external 12VDC source or applied via PoE IEEE 802.3af. In low light conditions less than 4 lux, color mode is automatically switched to black and white. The ACM-8211 provides a number of preset, automatic, and manual white balance settings; pan speed range of 20 degrees per second to 120 degrees per second; and a tilt speed range of 15 degrees per second to 70 degrees per second.
The Q6034-E day/night camera from Axis Communications combines an 18X optical and 12X digital zoom with autofocus and a 16:9 aspect ratio along with SMPTE 269M-compliant 1280x720 resolution. The model’s support for high power over Ethernet (IEEE 802.3at) allows it to use a single cable for power, video, and PTZ control. The Axis Arctic Temperature Control allows the camera to be used at temperatures down to -40 degrees Fahrenheit, and it has a built-in SD/SDHC card slot for local storage. The camera includes the Active Gatekeeper function to automatically move the shot to a preset position when motion is detected in a predefined area and the subject on video is tracked. The video output is H.264 motion JPEG from a 1/3in. progressive scan 1.3-megapixel CCD.
Canon USA designed the BU-51H 3CCD camera system for a wide range of indoor applications including surveillance, stage IMAG, videoconferencing, studio, and house of worship. Using a 20X zoom lens with 2X digital extender, the unit has adjustable night mode shutter speed, a builtin microphone, pan/tilt/zoom/focus position information output, and multiple video output formats. The outputs include uncompressed SD/HD SDI and an SD composite signal that can be simultaneously output and used for monitoring. Genlock is also available for video synchronization through a BNC connection. Focus may be either auto or manual, and gain is adjustable from 0dB to 36dB in six steps. The camera also features optical-shift image stabilization; auto, manual, and night shooting modes; and both auto and manual iris operation. Dustproof and waterproof efficiency is rated at 45IP.
For indoor monitoring and surveillance, Compro Technology markets the IP750P with the capability for continuous movement in 340-degree pan and 100-degree tilt. The camera has a 12X auto focus optical zoom, a built-in IR function and IR LEDs, 1280x1024 HD resolution, a built-in microphone, and two-way audio. It can output video in H.264, M-JPEG, and MPEG-4 with dual streams support along with micro SD/SDHC local storage for video and snapshots. Additional features include motion detection and 30 shot presets with one preset sequence. The IR LEDs turn on automatically under low light and turn off when light level returns to normal. With the optional WL 150 USB module, the unit can operate via 802.11b/g/n wireless LAN.
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