This is your perfect indoor solution to monitor both video and audio. This color CCD camera has a manual varifocal lens which can adjust to your required viewing angle while also streaming audio with its builtin microphone. QSee s professional CCTV cameras are designed to meet your indoor home and business needs and are easy to install and operate. Indoor color CCD camera kit. 420 TV lines resolution. Manual varifocal 3.58mm Lens. 1/3 CCD image sensor. Builtin microphone for audio monitoring. 60 ft. of cable included for flexible installation (extension cables available for longer distance). Image sensor: 1/3 Sharp Color CCD sensor. Lens: 3.5mm/8mm varifocal. Horizontal resolution: 420TVL. Effective pixels: 752x582 NTSC. Field of view: 69 to 33. Connectors: BNC (F) 12VDC 2.1mm (F). Minimum illuminance: 0.5 Lux/F1.2. Infrared Leds/Distance: none. IR LED wavelength: none. Audio output: 46dB. Synchronization: internal. Gamma characteristic: 0.45. Scanning system: 2: 1 interlace. Electronic shutter speed: 1/601/100 000 sec (NTSC). Video output: 1 Vpp75 ohm. Power supply: DC12V 400mA. Power consumption: 120mA. Operating temperature: 4F to 140F (20C to 60C). Compatability: Camera plugs into DVR VCR TV or video monitor.
Scan CCD Network Camera , equipped with a progressive scan CCD sensor, delivers superior-quality, crystal-clear video for professional surveillance applications such as monitoring banks, airports, parking lots, and traffic control, etc. It can capture razor-sharp, clear, and high-resolution images of moving objects that traditional interlaced-scan techniques can not achieve. Furthermore, working in combination with the high-performance progressive scan CCD sensor on Scan CCD Network Camera is a removable IR-cut filter that can deliver high-quality images even in infrared illuminated conditions. With self-developed VIVOTEK VVTK-1000 SoC, it simultaneously delivers dual streams for real-time monitoring. It also comes with many useful functionalities that give users more flexibilities such as built-in 802.3af compliant PoE, multi-lingual user interface, vari-focal CS mount lens, two-way audio by SIP protocol (*), and digital I/O for external sensor and alarm. Scan CCD Network Camera is definitely your best choice of building up a highly reliable network surveillance system. Features: SONY Progressive Scan CCD Sensor with VGA Resolution 2.9mm~8.2mm Vari-focal, Auto-iris Lens Removable IR-cut Filter for Day & Night Function Real-time MPEG-4 and MJPEG Compression (Dual Codec) Supports Dual Streams Simultaneously 3GPP Mobile Surveillance Built-in 802.3af Compliant PoE Two-way Audio by SIP Protocol Digital I/O for External Sensor and Alarm RS485 Interface for Scanners, Pan/Tilts Specifications: System CPU: VVTK-1000 SoC Flash: 8MB RAM: 64MB DSP:TI DM642 Embedded OS: Linux 2.4 Lens CS-mount, vari-focal, f=2.9 mm ~ 8.2 mm, F1.0, auto-iris IR Corrected Removable IR-cut filter for day & night function Angle of view 26.7° ~ 69.0° (horizontal) 20.0° ~ 51.0° (vertical) Shutter Time 1/30 sec. to 1/15000 sec. Image Sensor SONY 1/4? Progressive scan CCD sensor in VGA resolution Minimum Illumination 1.0 Lux/F1.0 Video Content Analysis Camera tampering detection Intelligent moving object detection Moving object loitering detection Video Compression: MJPEG & MPEG-4 video Streaming: Simultaneously dual-streaming MPEG-4 streaming over UDP, TCP, or HTTP MPEG-4 multicast streaming MJPEG streaming over HTTP Supports 3GPP mobile surveillance Frame rates: MPEG-4: Up to 30/25 fps at 640x480 MJPEG: Up to 30/25 fps at 640x480 Image settings Adjustable image size, quality, and bit rate Time stamp and text caption overlay Flip & mirror Configurable brightness, contrast, saturation, and sharpness AGC, AWB, AES Automatic or manual day/night mode Backlight compensation (BLC) Supports privacy masks Audio Compression: GSM-AMR speech encoding, bit rate: 4.75 kbps to 12.2 kbps MPEG-4 AAC audio encoding, bit rate: 16 kbps to 128 kbps Interface: Built-in microphone External microphone input Supports two-way audio by SIP protocol Supports audio mute Pan/Tilt/Zoom
Manufacturer: GrandStream. Each. Grandstream CCD IP Camera Cutting edge H.264 real-time video compression (D1 resolution) with excellent image clarity at low-to-modest bandwidth SIP VoIP for full duplex 2.way audio and video streaming to mobile phones and
32-bits RISC processor and special video encoder which can be up to 3M pixelsencoding performance.Support H.264 Main Profile@Level3.0 compression format, bit rate is smaller, and the image is more clear. It is more convenient for transferring through Internet and save more storage space.D1/CIF/QCIF resolution optional. User can change some specification according to their demands to satisfy his own visual prefer.Support PAL/NTSC CCD；Support 3 kinds of video stream, suitable for Local, Internet and Cross-platform view.Support to connect external audio capturing device (like MIC phone or sound pick-up) to capture the audio. Audio support G.711 and G.726 types.Built-in web server, support video view and parameter settings by browser; use one port to send all the data, it facilitates network setting.Support mobile phone watching.Support UPNP, port forwarding automatically on the router.Motion detection to detect environmental situation.Alarming record can be stored by email. It also sends alarm info to the alarm server.Support three level of user authority.Support upgrading online.Manufacture provide a free DDNS url, when IP Camera is connected to the internet, this URL can be used to visit the device.Manufacture provides free software, support Multi-view, Long time recording, video replay etc.Support video view by other browsers like as Firefox, safari etc.Size: 90(H)*130(D) mm
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VideoSecu security camera day night vision outdoor weatherproof 420TVL 1/3" SONY CCD build-in audio
Anatomy of a Camcorder
Camcorders are ingenious tools that allow us to record images of the events that make up our lives or to get creative and produce unique and interesting films that previously only professional videographers could craft. For beginners, it is important to understand a little bit about the basic anatomy of a camcorder in order to be better equipped to make a selection when shopping.
Although every camcorder model is a bit different and may offer unique features there are basic components that are common to them all.
The Image Sensor:
A camcorder uses either a CCD, charge-coupled device, or CMOS, complimentary metal-oxide semiconductor, to convert light into electrical signals and record the resulting images. They basically perform the same function as film in a traditional camera or camcorder.
A CCD consumes much more power than a CMOS chip but tends to produce a higher quality image. Images produced via a camcorder with CMOS tend to have more "noise" due to lower resolution and less light sensitivity. As with most technologies however, CMOS as the newer development is gradually gaining ground. The primary advantage of CMOS at this time is it's affordability versus the more expensive CCD sensors.
The Lens:
The lens of a camcorder provides the opening for light to pass through onto the CCD/CMOS and focuses it so that the image is sharp. By adjusting the lens users can alter what items within a scene are in focus as well as how much light is entering to control the look and quality of the resulting images. Lens controllers are sometimes purchased to allow a user to adjust the lens from the handle of the tripod.
Add on lenses and filters can be used. For instance a telephoto lens allows subjects at a distance to be magnified, a wide angle lens broadens the horizontal field, and a fisheye lens allows for an extreme wide-angle view. Common filters include polarizing filters to reduce glare and UV filters to protect the lens from harmful rays.
An important feature with camcorder lenses is optical zoom which allows the lens to magnify images; a function that allows users to obtain better pictures of subjects at a distance. Optical image stabilizers help to detect and reduce unwanted movement of the camcorder to produce a smoother, more stable film. Digital versions of zoom and stabilization are available on camcorders but do tend to produce a somewhat lower quality image. Digital stabilization however is sometimes preferred by some consumers as camcorders with optical stabilization are often larger.
The Microphone:
The average camcorder has a built-in multi-directional microphone. These microphones tend to pick up audio from any direction; from behind, in front of, and at the sides of the camcorder. Thus many home movies end up difficult to hear due to undesired "background noise".
A camcorder also often has a microphone jack. If the camcorder has such a jack, purchasing an external microphone to attach to it can greatly improve the audio captured. External microphones can be moved closer to the sound source in some instances and in others they can focus on the sound that is desired versus any background noise. Wireless microphones and lapel microphones are useful when recording individual speakers. Shotgun microphones pick up sound from in front of the microphone at a distance while cardioid microphones pick up sound from in front which is nearby. Each option helps to reduce the intrusion of unwanted sound that distorts the audio desired.
The View Finder and LCD Panels:
The viewfinder on a camcorder allows users to see what they are filming. They can be black and white or color. Size varies as does resolution. Some users select a larger viewfinder with higher resolution to aid their visibility but others simply use the LCD screen for this purpose. LCD screen sizes vary as well, and are selected based on personal preference. Viewfinders can often provide greater visibility when filming in sunlight while use of an LCD screen that swivels allows greater visibility if filming overhead.
Inputs and Outputs:
A camcorder will have AV sockets and ports to allow connectivity to other devices such as a television or computer. These sockets allow film to be downloaded, played back, or copied. To allow the camcorder to hook up with a TV or other device it is important that the inputs and outputs coincide. These may be composite video or S-video for analog signals or DVI/HDMI for digital signals.
Most camcorders will hook up with a PC via a USB 2 or FireWire port which allows much faster transfer than a USB 1.1 port. Again, the camcorder must be compatible with the computer to allow hook up.
Although the construction of a camcorder can be much more complex and there is variability in features from device to device, if beginners understand these basic parts they will be well on their way to being able to make a knowledgeable selection when shopping.
About the Author
The author, Christine Peppler, is the webmaster of http://www.homemedias.info. She helps consumers better understand their options when selecting home electronics devices. Readers are encouraged to visit her website for more information about using and purchasing a camcorder.
