Sharp Ccd Camera
 |
 Real CCTV DVR Dome Camera 420TVL Sharp 1 4 Color CCD 36 mm lens 08lux $14.99 Time Remaining: 26d 4h 58m Buy It Now for only: $14.99 |
 Security 42 IR DayNight Wired CCD CCTV Surveillance Dome Video Camera Sharp CCD $32.00 Time Remaining: 1h 48m |
 Functional Smoke Detector Real Alarm Sharp CCD Pinhole color Camera w Mic $47.69 Time Remaining: 24d 3h 3m Buy It Now for only: $47.69 |
 7 Inch Monitor Video Door Phone Doorbell Intercom Sharp CCD IR Camera Unlock $149.99 Time Remaining: 4d 11h 13m Buy It Now for only: $149.99 |
 7 Inch Monitor Video Door Phone Doorbell Intercom + Sharp CCD IR Camera Unlock $164.99 Time Remaining: 5d 13h 3m Buy It Now for only: $164.99 |
 F2D MINI CAMERA WITH PINHOLE LENS 1 4 SHARP COLOR COLOR CCD 420TVL COLOR CAMERA $29.69 Time Remaining: 24d 10h Buy It Now for only: $29.69 |
 Sharp CCD 12pcs IR LEDs Pan Rotation Speed DOME CCTV Camera w Remote Control $49.99 Time Remaining: 10d 29m Buy It Now for only: $49.99 |
 CCTV SHARP CCD Day Night Infrared Color Camera 420TVL $55.00 Time Remaining: 13d 6h 5m Buy It Now for only: $55.00 |
 4x pcs pack CCTV Dome Camera 420TVL Sharp 1 4 Color CCD 36 mm lens 08lux $58.95 Time Remaining: 10d 6h 21m Buy It Now for only: $58.95 |
 4x CCTV PIR Motion Detector Camera CCD Sharp 1 4 $99.99 Time Remaining: 15h 9m Buy It Now for only: $99.99 |
 Sharp 420TVL CCD COLOR SECURITY IR DOME CAMERA E91 $33.00 Time Remaining: 24d 8h 24m Buy It Now for only: $33.00 |
 Hot 2012 New 1 4 Sharp CCD Color Security 48 IR 40M CCTV Camera Night Vision $13.43 Time Remaining: 9h 40m Buy It Now for only: $13.43 |
 36mm F20 lens sharp color ccd dome security mini cctv camera 1 $14.05 Time Remaining: 6d 15h 43m Buy It Now for only: $14.05 |
 Lot of 10 CCTV DVR Dome Camera 420TVL Sharp 1 4 Color CCD 36 mm lens 08 lux $139.99 Time Remaining: 19d 20h 6m Buy It Now for only: $139.99 |
 F2D MINI CAMERA WITH PINHOLE LENS 1 4 SHARP COLOR COLOR CCD 420TVL COLOR CAMERA $29.69 Time Remaining: 28d 8h 40m Buy It Now for only: $29.69 |
 Internal Recessed Dome Camera Steel Housing Sharp CCD $46.89 Time Remaining: 26d 21h 9m Buy It Now for only: $46.89 |
 Wide Angle Spy Camera and Security Camera Sharp CCD Pal $71.91 Time Remaining: 7d 17h 31m Buy It Now for only: $71.91 |
 Silver 1 4 Sharp 420TVL Waterproof CCTV CCD Camera E80 $30.00 Time Remaining: 28d 3h 4m Buy It Now for only: $30.00 |
 36mm F20 lens sharp color ccd dome security mini cctv camera $15.00 Time Remaining: 7d 7h 10m Buy It Now for only: $15.00 |
 4x CCTV Smoke Detector Camera CCD Sharp 1 4 $89.99 Time Remaining: 18d 17h 1m Buy It Now for only: $89.99 |
 E9D NEW INDOOR 1 4 SHARP CCD CCTV SECURITY CAMERA $81.68 Time Remaining: 3d 14h 19m Buy It Now for only: $81.68 |
 4x CCTV 24 IR Dome Camera SHARP CCD 1 4 for DVR $99.00 Time Remaining: 8d 12h 44m Buy It Now for only: $99.00 |
 HOT NEW 36 IR SHARP color ccd 36mm lens dome cctv camera security surveillance $21.25 Time Remaining: 18d 8h 52m Buy It Now for only: $21.25 |
 4x CCTV 24 Infrare Dome Camera SHARP CCD 1 4 for DVR $99.99 Time Remaining: 17d 4h 41m Buy It Now for only: $99.99 |
 4x CCTV 18 IR Dome Camera SHARP CCD for DVR $89.00 Time Remaining: 11d 17h 2m Buy It Now for only: $89.00 |
 CCTV Home Security DVR 4 Sharp CCD 420TVL Cameras Completed Kit IE Mobile View $299.00 Time Remaining: 7d 16h 38m Buy It Now for only: $299.00 |
 Sony CCD 600TVL CCTV SPY Security IR Indoor Outdoor Dome Sharp LED Colour Camera $59.40 Time Remaining: 6d 17h 41m Buy It Now for only: $59.40 |
 CCTV IR Dome Camera 36mm 1 4 Sharp CCD 420 TVL $28.14 Time Remaining: 17d 9h 29m Buy It Now for only: $28.14 |
 E9D NEW INDOOR 1 4 SHARP CCD CCTV SECURITY CAMERA $81.68 Time Remaining: 28d 8h 38m Buy It Now for only: $81.68 |
 4x CCTV CCD Dome Camera SHARP 1 4 for DVR $89.99 Time Remaining: 11d 17h 14m Buy It Now for only: $89.99 |
 24G wireless 1 3 Sharp CCD camera Receiver kit $187.62 Time Remaining: 3d 3h 17m Buy It Now for only: $187.62 |
 SECURITY OUTDOOR SHARP CCD IR CAMERA 25M NIGHT VISION $96.73 Time Remaining: 10d 4h 56m Buy It Now for only: $96.73 |
 2in1 Door video phone intercom 7 LCD Sharp CCD Camera $189.99 Time Remaining: 3d 4h 51m Buy It Now for only: $189.99 |
 Wired Color CCTV SECURITY CAMERA 36mm Lens SHARP CCD $33.54 Time Remaining: 21d 10h 2m Buy It Now for only: $33.54 |
 |
Defender SN502-4CH-002 Feature-Rich 4-Channel H.264 DVR Security System with Smartphone Access and 4 Indoor/Outdoor Hi-Res CCD Night Vision Cameras
List Price:  |
DescriptionThe Defender SN502-4CH is a complete DVR security system that has all the latest features yet is very easy to use. It has been specifically designed for do-it-yourself applications. This kit includes a four channel DVR with built-in hard drive, four indoor/outdoor night vision cameras, and all accessories needed to start monitoring your property immediately... |
 |
GrandStream GXV3601 CCD IP Camera
List Price: |
Description- Grandstream CCD IP Camera- Cutting edge H.264 real-time video pression (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 video phones- Integrated PoE embedded analytics large post-event recording buffer- High quality Sony CCD sensor and lens to ensure razor sharp picture quality- Advanced multi-streaming-rate real-time H... |
 |
Defender SN301-8CH-008 8 Channel H.264 Smart DVR Security System with Coaching iMenu and 8 Hi-Res CCD Night Vision Surveillance Cameras (Black)
List Price: |
DescriptionThis Defender DVR system will work for almost any property because it includes 8 indoor/outdoor night vision cameras. Depending on the size of your business or home, you can mount the cameras at all entrances, in your yard and even inside... |
 |
SVAT CV502-4CH-002 Web Ready 4 Channel H.264 500GB HDD DVR Security System with Smart Phone Access and 4 Indoor/Outdoor Hi-Res Night Vision CCD Surveillance Cameras
List Price: |
DescriptionFeature-rich and easy to use, the SVAT CV502-4CH-002 complete DVR security system has been specifically designed with the do-it-yourself consumer in mind. This kit includes a four channel DVR with a built-in 500GB hard drive, four indoor/outdoor hi-res night vision CCD cameras, and all the accessories needed to start monitoring your property immediately... |
 |
Olympus TG-310 Tough 14.0 MP Digital Camera with 3.6x Wide Optical Zoom and 2.7-Inch LCD, (Blue)
List Price: |
Description14 Megapixels, 3.6 x Optical Zoom, 2.7 LCD, Waterproof 3m/10ft, Shockproof 1.5m/ 5ft, Freezeproof -10c/14F |
 |
Panasonic Lumix DMC-ZS8 14.1 MP Digital Camera with 16x Wide Angle Optical Image Stabilized Zoom and 3.0-Inch LCD (Black)
List Price: |
DescriptionThe LUMIX DMC-ZS8 camera features a versatile 24mm ultra-wide angle and powerful 16x optical zoom LEICA DC VARIO-ELMAR lens and Intelligent Resolution technology which adds delicate detail that exceeds even optical image quality in both photo and movie recording. |
 |
VideoSecu Day Night Vision Outdoor CCD CCTV Security Dome Camera Vandal-proof 3.6mm Wide View Angel Lens 420TVL with Free Power Supply 1Z0
List Price: |
DescriptionThis infrared dome camera is designed for outdoor and indoor environment. The weatherproof dome assembly is a versatile, cost-effective, integrated surveillance solution. Its compact size of 3 1/2" is unobtrusive, providing a high quality CCD sensor and a precision lens in a sleek, attractive housing... |
 |
AmScope CCD Video Camera for Microscopes
List Price: |
DescriptionThis is a CCD video camera unit for microscopes. Coming with Sony CCD sensor and adjustable C-mount lens, it captures microscope images and displays them on an analog TV screen. It offers widefield of view, high quality sharp images and unbeatable low price... |
 |
Orion ED80 80mm f/7.5 Apochromatic Refractor Telescope
Sale Price: $499.99 |
DescriptionWe love those premium apo refractors as much as the next guy. We just don't think you should have to work a second job or put the family heirlooms on eBay to own one. Now you won't, thanks to our amazingly affordable 80mm ED refractor... |
 |
Celestron NexImage Solar System Imager
List Price: |
DescriptionThe Celestron NexImage Solar System Imager is a complete CCD solar system imager capable of producing high quality planetary images with greater light sensitivity and color fidelity than comparable CMOS imagers... |
How To Choose Web-Camera
Why a web-camera?
Originally web-camera set up to organize the communication and the establishment of teleconferencing via the Internet. It is up to now remains their main purpose. Although if you want you can find many other applications svezhepriobretennoy web-camera. For example, you can shoot video, take photographs, to video surveillance. A modern models can even watch the starry sky.
Web-camera is designed exclusively for multimedia network applications, in which the base rate is not on the quality of the transmitted data (sound and image), and at speed. When choosing web-camera the first thing to pay attention to compatibility with the computer's operating system, because many models are calculated only on Windows.
The structure of web-camera includes the following components: CCD, lens, optical filter, video capture card, video compression unit, the central processor and built-in web-server, flash memory, network interface, serial ports, alarm inputs / outputs. Some models of cameras are turning devices and can perform a circular video surveillance.
Matrix web-camera
This web-based cameras, however, as any digital optical devices. Differ matrix technology manufacturing. Today, widespread development and application received two technologies - CMOS and CCD. The main difference is that CCD-issue better picture and create less "noise" (interference) than the matrix on the CMOS-sensor. But more expensive.
In addition to the sensor technology, is considered such an important parameter as the resolving power. From the permission matrix depends on the quality of transmitted images. Range of values lies in the range from 0.1 to 2 megapixels (MP), but the most popular resolution VGA, amounting to 0.3 megapixels. (frame size at the same time - 640x480). For the Internet video-conferencing have enough resolution to 320 x 240 pixels. Standard 640 x 480 pixels, which offer all the cameras, ideal for recording small videos that can be sent by e-mail. The most expensive models have a matrix with a resolution of 1 280 x 960 pixels and can do large-scale photographs.
Sensitivity matrix - a parameter that determines the minimum illumination at which the camera can shoot. Measured sensitivity in lux (lux). Especially it is necessary to emphasize that regardless of the cost, almost all cells, even with the CCD-sensors begin to "make noise, make noise, if the matrix gets enough light.
Connecting and installing web-camera
When choosing web-camera, a very close look at the type of connection to the computer. Most models are equipped with a USB-connector, but, as we know, there are two versions of this interface, and they differ greatly in speed. If a web-camera version supports USB 1.1, then the video quality is not the best: 640 x 480 dots (pixels) at 15 frames per second (or the frame rate 15 fps). This will affect the quality of the picture - it will be like a little "slow down". Therefore, please note that the frequency of the frame was not less than 30 fps. (As a rule, now almost all web-cameras have such a frequency). Increased data stream USB 1.1 can not miss. Therefore we recommend to choose the model that support the USB 2.0.
Connect web-camera to the Internet on cell lines of communication can be via cellular modem. Data transfer rate is usually from 5 to 20 kbps. Cable modems provide Internet access over cable networks. The maximum speed of receiving data up to 40 Mbps, and data transmission rate is about 10 Mbps. Digital Subscriber Line - technology that provides bandwidth for simple copper telephone wires. Data transfer rate may vary depending on the company providing this service.
More expensive models of web-cameras are equipped with wireless interfaces. They are usually divided into two parts - a transmitter (in one case with most cameras) and the receiver, which is also connected to the connector USB. It often is used for signal transmission technology Wi-Fi.
Additional features web-camera
We have already said that the web-camera, in addition to its primary function - broadcasting information over the Internet, have a number of additional. Thus, for advanced users can choose the camera that lets you take pictures, shoot video, edit information, manage the white balance, contrast, brightness, color and gamma correction, and frame rates.
Photography
If you are going to engage in photography, the main parameters in the selection of web-cameras are a great resolution of the matrix and the amount of memory storage. 8 MB of memory allows us not only to do, but also to store images (120 image size 640 * 480, 480 images or 40 seconds of video in the format 320 * 240, or 90 seconds of video in the format 160 * 120).
Videography
When recording video the most critical is the best quality video capture. You may also need more sensitive than the built-in, microphone. Best image quality providing the camera by Logitech and Philips. The only inconvenience that may arise - is the need for constant connection with a computer cable and lack of a viewfinder.
Autofocus
Autofocus (or avtozum) is convenient because you do not have to manually configure each time focus. The camera with servo and clever electronics tune into razor sharp. Cameras with manual focusing is extremely rare.
Built-in microphone
Built-in microphone, now have almost all models of web-cameras. This is convenient, especially those that do not need to connect additional devices. And, of course, saves you time. The only nuance here may be that in most cases the sound quality of such microphones is not the best, so if you already have a good microphone is better to use them. Cameras with built-in microphone can transmit audio. Also, sound files can be transferred by the availability of audio channels in the cell.
Password protection
It occurs not in all models and serves to limit the rights of access to web-camera. By default, the video camera can be viewed from any networked computer that is equipped with a standard web-browser (eg, Internet Explorer or Netscape Navigator). However, you can limit the number of persons with rights of access to web-camera, enter the password to the user level. Many web-cameras support multi-level password protection for the separation of access rights and administration.
Motion Detector - is a software module for the detection of moving in the field of web-camera installations. The detector determines the size of the object and its speed.
Fixing the camera
By the method of the physical installation of the webcam can be divided into klipsovye and desktops. Klipsovye securely attached to your LCD monitor or lid. Such cameras are often quite petite, and sometimes even embedded in the monitor. Board, as the name implies, have a platform and a leg. Although they occupy with some useful space, but give greater freedom of choice in the direction of the point of shooting.
The monitoring system with web-cameras
Now web-camera more frequently used to organize surveillance systems. Few (or one, depending on the global system) cameras, installed in a room connected to a computer from which with the help of special software is tracking. It may conclude simply visual observation or in the auto-tracking of the movement (when the camera detects motion). Preparation of the monitoring system of web-cameras allows for relatively little money to organize the qualitative observation. Of course, there is this solution and its shortcomings. Primarily, this limitation on cable length USB - the maximum distance devices 5 meters.
Quality and price
Now we can summarize and highlight the main characteristics that are worth paying attention when buying a web-camera:
1. The maximum image resolution of 640x480 pixels.
2. USB-interface to connect to a computer.
3. Frame Rate - 30 fps.
4. Automatic adaptation to a wide range of lighting
Based on these criteria, you can choose web-cameras in different price categories.
In a series of cost-fall web-kamers with a resolution of 640 x 480 pixels, auto-focusing, without built-in microphone and the interface with USB 2.0. This option is ideal for home video and for novice users.
More discerning users recommend that you stop your choice on the web-camera with a resolution of 1600 x 1200 pixels, built-in microphone, who knows how to approximate the subject with a digital zoom, with the functions of automatic face tracking user. Typically, these devices support USB 2.0 and are equipped with advanced software.
The recognized leaders in the field of web-cameras are the companies Intel, Logitech, Microsoft, Philips, PerfectGift, Mustek, Genius, Creative.
How to organize a videoconference
Videoconference - this communication via the Internet in real time. In the process of communication the user has the opportunity to see how his companion, and his own image. In this part of the screen occupied by the window with the video picture, and in the remaining parts can be located windows applications to work together with the data. The quality of video is based primarily on the quality of the sound and picture. The first depends on the user's ability to capture deviations or distortions (eg, noise or interruptions) in the stream of transmitted speech. Video quality is determined by the resolution of the image (number of dots per inch) and the frequency of the frame (the number of reproduced frames per second). For the viderkonferentsy suit almost all web-camera, it all depends on the requirements for image quality and breadth of the data link.
About the Author
Alex Keys 27y.o., California, USA