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Purchasing a low priced DVR card from another company may appear like a good deal, but not all PCI cards are created equal. Some competitors used false and misleading performance claims indicating their products were high speed, when in fact they were not. There were reports of slow video speeds, blurry images, poor playback features, insufficient data storage and frequent system crashes, with competitive products that cost less. We sell only professional grade DVR products.
There are two elements when it comes to video compression. The first is picture quality, and the second is file size.
If you're looking for a security camera for the office or warehouse and you want to see as much as you can, you should look for a 2.8 or 4mm lens (provides a wide, somewhat distant view). If you need to observe a limited area, such as an entrance, you should choose an 8mm lense (provides a narrow view and objects are closer). In other words, the smaller the focal length number, the wider the field of view. To get the most flexibility in choosing the best field of view, consider a varifocal lens.
