cailun 0 Posted July 22, 2006 Hi, I wonder if there is any tester ( both as a software or small device ) for checking if the resolution of a CCD camera meet what the manufacturer claimed? Thanks for your information. Cailun ps. I just feel too late to come across such an excellent forum for our security people. Share this post Link to post Share on other sites
kandcorp 0 Posted July 22, 2006 http://www.cctvforum.com/viewtopic.php?t=3344&highlight=resolution+test Share this post Link to post Share on other sites
Thomas 0 Posted July 22, 2006 Generally a Resolution testing chart is used. Share this post Link to post Share on other sites
ak357 0 Posted July 22, 2006 http://docs.imatest.com/tour_testcharts.html http://www.sinepatterns.com/i_Stdrds.htm Share this post Link to post Share on other sites
kensplace 0 Posted July 23, 2006 Dont forget to test the bandwidth and resolution of the recording device also, you can have a great camera, but a crappy dvr..... Share this post Link to post Share on other sites
ak357 0 Posted July 23, 2006 How do you test resolution of DVR ? Thanks Share this post Link to post Share on other sites
kensplace 0 Posted July 23, 2006 You could get a dvd with a test pattern on it, and play that into the dvr, record it and play it back on a monitor. Then you will be able to check the output to see how much resolution is recorded, according to the instructions with the test pattern dvd. Or get a test generator, and do the same, but they cost a lot.... Share this post Link to post Share on other sites
ak357 0 Posted July 23, 2006 Thanks for info I do have NTCS signal generator but can you tell me where did you get Test DVD please Thanks Share this post Link to post Share on other sites
kensplace 0 Posted July 23, 2006 http://deinterlace.sourceforge.net/Help/Calibration.htm has a few sources on it for test dvd's, they also pop up on ebay a lot (but I have no idea how accurate the ebay ones are.....) and there a lot on google if you search for pal test dvd or ntsc test dvd etc. Share this post Link to post Share on other sites
ak357 0 Posted July 23, 2006 I did search on Google found few will order tomorrow Thx p.s. Would be nice if all of us who has test DVD or Test Gen can post results with detail product info Share this post Link to post Share on other sites
Cooperman 0 Posted July 24, 2006 Without wishing to state the obvious, if you want to test the resolution of a camera using a test chart, you have to make sure that a quality lens is used, and in particular, that the lens is capable of resolving more lines than the cameras imager. If a camera's resolution is visually tested on a high resolution monitor, it is then fairly straightforward to make a test recording (from that same camera / lens combination) and see what quality results are achieved on playback. Share this post Link to post Share on other sites
rory 0 Posted July 24, 2006 Typically if you get a decent name brand camera you shouldnt need to worry about this too much .. Share this post Link to post Share on other sites