coldeye 0 Posted May 1, 2013 I just bought one of these, to start experimenting with IP cameras and NVRs... http://goo.gl/zHktR I obviously wasn't expecting much in quality from the cheapest IP camera package I could find, but it seems like, in a side by side comparison with QSee 600TVL analog cameras in one of their standard DVRs, the quality of the 720p IP camera is only marginally superior - ENTIRELY due to heavy compression artifacts. In other words, I can easily see how much crisper and higher res the image from the QNC7001B cameras are when compared to the mediocre analogs, but the image from the IP cameras are so dominated by glaring compression, that they are no better at recognizing anything. Is this expected behavior, or is there some way to reduce the compression? And I guess in general, should I expect a 720p camera to beat a 600TVL in real world tasks like reading license plates and recognizing facial features, or only in technical metrics like pixels in the sensor, etc? Share this post Link to post Share on other sites
MaxIcon 0 Posted May 1, 2013 To minimize compression artifacts, you want to use the highest bitrate and best quality (if you're using VBR). My 720p cameras, including the Dahua, are generally much better than my analog cams were with the same field of view, even the expensive 1/2" cams with nice lenses. The main exception is night shots, where you're looking at a basic problem of more pixels in a given sensor area, so less light per pixel. No way around that, even if you go to 1/2" IP cams. Share this post Link to post Share on other sites
