Resolution for security camera is an critical thing. You have to want this specification when you buy a surveillance camera. Usually, for CCTV cameras, the resolution have collection from 330 TVL (television lines) to 600 TVL. There is 2 choice for CCTV cameras, black with white, and color. The tremendous out as 560 lines for color resolution. But for black with white in 600 TVL.
Recently You can acquire IP security camera in higher resolution, greater than 5 megapixels. In multiple country, regular TV transmission displays picture in resolution 480 lines. Actually, the detail of pictures are depend on the resolution, the higher resolution you choose, the additional detail surveillance video you can see.
High definition television (HDTV) has resolution almost 720 or 1080 lines, depend on the class HDTV you have plus the channel you choose. If you like detail of surveillance camera, you have to decide higher resolution. The suggestion is IP based megapixel cameras, not choose a closed circuit, but attach over an IP network.
The fact, IP megapixel security cameras are additional expensive than CCTV cameras. Since for high end product by ultra-high resolution, IP megapixel cameras can describe video by additional detail twice than the detail of high definition television resolution.
Many people are unrealistic after shopping for a security camera. This character due to lack of experience. They have choosen mistaken the specification of surveillance camera rather than what they needed. The camera cannot pick the picture up at 80 feet away with 3.6mm lens, while the lens can certainly pick the object up in detail at 20 feet away.
Due to the very exclusive price distinction concerning IP megapixel cameras plus CCTV cameras, it makes sense if public prefer to add other CCTV cameras instead of upgrading their megapixel cameras. It is realistic that the higher price of the security cameras, the higher resolution plus the higher detail of the video you can see.
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