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CCTV Camera Tip: Apply Simple Common Sense when Picking CCTV Cameras and Lenses
Get a good face shot: Use Higher quality cameras at entry areas. Doors, gates and other entry areas need a good quality, high resolution camera to record a good 'face shot.' The video from this camera should be considered a highly valuable since it can be used as evidence in identifying a person in a court of law. Wide Angle Cameras for large surveillance areas Once you can get a good shot of a persons face, you should use a wider angle camera lens for the interior surveillance spaces of the building. Using color cameras inside your building is a good idea because you can readily identify a person by the clothes they are wearing. Used in conjunction with the face shot at the entry point, you have an excellent record of all people and activities in your surveillance areas. Consider the following when choosing a CCTV camera: 1. Sketch out a Floor Plan: Put in all camera locations. Consider the distance to your surveillance zone: Are you 5 feet or 15 feet away from your surveillance target area? It is best to locate your camera as close to the surveillance area first, then choose how much zoom you need. Do you need 4mm, 8mm or 12mm lens? 2. Field of view or area of surveillance: Take photos of areas you want to cover from the proposed camera locations. What lens you need depends what you want to see and how far away and how wide a viewing area. Wide angle and fisheye lenses are available. 3. Resolution: Do you want to capture a persons face or a car license plate? Each camera location will determine which lenses would maximize your surveillance potential. Do you need 50mm lens or standard 8mm? 4. Vandalism potential: Will your camera be subject to damage? Damage resistant cameras are available. 5. Lighting: Is the space well lit or dimly lit. Are the lights turned off at night? Do you want to monitor the area with the lights turned off? Do you need infrared cctv cameras or low light cameras? 6. Budget: Just like any technology, the more you spend, the better the system you get. Keep in mind a low cost camera is better than no camera at all. About CCTV Cameras: Closed circuit television also known as CCTV is the industry standard in surveillance cameras. CCTV can be a single network of cameras or multiple networks of camera linked together via switches, internet or wide area computer technology. CCTV Video data is analog but can be converted to digital via CCTV Digital Video Recorders. Once the video data is digital it can be managed just like any other computer data and can be stored automatically on computers and network storage devices. For more information on cctv cameras visit Camera Security Now or call toll free: 877-422-1907 John Beagle is president of Xponex Web and Media Services and can be reached at 513-422-1907x222. Xponex.com/
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You can also look for a model with an optical zoom lens that gives you the flexibility of variable focal length and a range of lens options within a single zoom lens. -->Shutter Speed The shutter in your camera lets light in during a shot and keeps light out at other times. When the shutter opens for an exposure, light is allowed to impact on the film or image sensor. If you set a slow shutter speed, more light impacts on the sensor and affects the type of exposure. When you use a faster shutter speeds your picture is sharper and clearer. There is a maximum shutter speed that is available to you in your camera system. The shutter speed is set at a fraction of a second- for instance, 1/1000th of a second. It could also be 1/2000th or even the much-preferred higher speed of 1/4000th of a second that is available in certain models. Professional use models boast of even higher shutter speed of 1/6000th or 1/8000th of a second. If you want to freeze action such as in sports, you require fast shutter speeds. There are many more features that when used effectively can add value to the impact of your photographs. Most 35mm SLR cameras have a TTL viewfinder. TTL stands for 'through the lens' metering system. This device has the ability to measure (on a scale) the amount of light impacting the film. Using this device is the key to control the exposure and get the right amount of light in order to capture a proper image. You can also use a tripod with your SLR camera. A tripod is your answer to achieving the right exposure in a close up shot and in low light conditions. It holds the camera steady, helps in focusing and ensures a sharper picture even when shutter speed is slow. The guidelines discussed here on the basics of photography and the additional features of the SLR system, will not only get you started but also help you avoid the common mistakes that many budding photographers make. 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With the advent of the digital camera the scope of this wonderful business has opened up new horizons for the users and photographers who seek to explore new lands and trod the ground of innovative creation and thus it can be aptly said that black & white can become more creativity with the boon of digital photography and digital camera. This discussion is primarily aimed at exploring the incipient information regarding the blessing of the digital camera in black & white photography so that the novice as well as the expert photographers can become richer in knowledge! Exposure Compensation The digital camera is in reality a great possession with many facets of its utilities and not only that knowing these utilities makes the understanding the digital camera complete. The utilities are also so very diverse that they too offer further introspection of details in their varying applications. Such an area is digital camera exposure compensation. Only knowledge of digital camera exposure is not enough, so the digital camera exposure compensation requires some amount of exposure in itself! This discussion is focused towards that cause itself.
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