ryeporta 0 Posted October 19, 2011 Hi .. I could not really find stuff in the forum that addresses the lowdown into HD IP Cams .. so I thought I might as well just start 1 .. My Question: 1) HD vs Megapixels I understand that HDTV cams have resolution of 1980x1080 .. which is effectively a 2MP cam. It also has to comply with a series of HDTV standards like 16:9 aspect ratio. So .. does it mean a 3MP IP Cam beats a HD1080? Is there any chance that a 2MP Cam gives better results HD rated Cam? What about the colours, noise, crispness/sharpness of images, frame rates? I mean assuming both are from reputable brands. What does the "HD" marking signifies?? I mean .. to most layman .. it sounded like the holy grail .. but is it really so? (let's just ignore the price tag for this discussion ) Will be heaven if someone has a demo link to view a comparison on a live system Share this post Link to post Share on other sites
ssmith10pn 0 Posted October 19, 2011 A 1mp camera can be considered HD. 1280 x 720 (720P) 2MP 1920 x 1080 3MP 2048 x 1536 (4:3 Format) 5Mp 2592 x 1944 (4:3) 8Mp 3296 x 2472 Then if you want to go for the Gusto: 16Mp 4864 x 3248 29Mp 6576 x 4384 The picture quality doesn't improve from 1Mp to 29Mp. It's all about pixel density to cover a large area and still maintain a good pixel density so you can zoom in on archived video and it not tile out on you. An Analog camera has great picture quality if the coverage area is small enough. Max res on analog is 768 x 540 Lets say you wanted to keep your pixel density of 40 pixels per foot in width. 768 / 40 = 19.2 feet 1280 / 40 = 32 feet 1920 / 40 = 48 feet 2048 / 40 = 51.2 feet 2592 / 40 = 64.8 feet 3296 / 40 = 82.4 feet 4864 / 40 = 121.6 feet 6576 / 40 = 164.4 feet 40 Pixels per foot is just an average number. Depending on what you want to see you could drop down as low as 12 per foot or, if you want facial recognition you need 75 to 90 per foot. Hope that helps. Share this post Link to post Share on other sites
