rmvw 0 Posted July 16, 2014 Dear community, Comparing CCTV-cameras from different vendors, is it true, that models with the same image sensor (e.g. Pixelplus PC1099K) will always deliver the same image quality. Or could it be, that for example due to a different board, even if the image sensor is exactly the same, image quality could differ? Thanks a lot for your help in advance! Best regards, Daniel Share this post Link to post Share on other sites
the toss 0 Posted July 16, 2014 That is a bit like saying every car with a 5 litre V8 motor will give the same performance. There are a lot of things going on besides the sensor. Share this post Link to post Share on other sites
rmvw 0 Posted July 16, 2014 Thanks for the quick answer, Toss! In your experience, which other components are most likely to affect picture quality? For example, lens, board, etc.? And if these other components' quality is substandard, what is the effect on the picture quality? Share this post Link to post Share on other sites
sampixworld1 0 Posted July 17, 2014 Great topic " title="Applause" /> Share this post Link to post Share on other sites
the toss 0 Posted July 18, 2014 Thanks for the quick answer, Toss! In your experience, which other components are most likely to affect picture quality? For example, lens, board, etc.? And if these other components' quality is substandard, what is the effect on the picture quality? Your question is really beyond a comprehensive answer on a forum But I'll give you some direction to aid your own research. A camera can be divided into two basic components. Sensor & electronics. The sensor receives the picture information & the electronics processes it to design algorythms. The two main types of sensors are CCD (charge coupled device) and CMOS. CMOS used to be low res , low power , cheap & nasty but because of R&D due to the consumer market (smartphones) they now compete with CCD performance wise & are the preferred sensor for IP cameras. As far as the end user is concerned , about the best way to judge the quality of the sensor is to look for a reputable manufacturer (sharp , sony etc) Even quality manufacturers can have problems like Sony had with the "super HAD " chip. As for the electronics there are all sorts of ways to massage the signal to give a desired result. The important thing to remember is that most things are a compromise and one camera will not cover all situations. You need to understand the situational requirements and then get the suitable camera. Lots of info on manufacturers websites. Share this post Link to post Share on other sites
SunnyKim 2 Posted July 18, 2014 Pixelplus has beaten Sony's CMOS sensor so badly in China market with pricing. Probably your cameras are manufactured in China. Its quality can be marginal to that of Sony's. To me, the lens comes first, then comes ISP chip which does the image processing on the raw captured image data from the sensor. As to ISP, most of the sensors, as Pixelplus', include the ISP into its sensor chip. In order to compare camera quality, you can plug the camera output (TV signal) into a high brand TV set. Share this post Link to post Share on other sites
survtech 0 Posted July 18, 2014 In order to compare camera quality, you can plug the camera output (TV signal) into a high brand TV set.I assume you mean when testing a standard definition analog camera. All bets are off with 960H, 1200H, IP, AHD, HD-SDI, HDCVI or HD-TVI cameras. While some types may work on a regular TV (assuming it's not one of the newer models that have eliminated composite inputs), most of the ones I just named require encoders and a computer to display. Share this post Link to post Share on other sites
