The main parameters of webcams
The main parameters can be viewed on a box or in instructions.
Type matrix (Sensor Type). There are matrix created by technology CCD and CMOS. Without going deep into technical intricacies, I would say that CCD matrix gives a higher quality, but also costs pretty much.
Resolution matrix (Pixel number). Similarly to a digital webcam. This option specifies the maximum authorized shots. The matrices are from 100k up to 2 000 k. The most common matrix on 300k (0,3 Mpx), still often called VGA. For VGA webcams maximum resolution is that of 640 480.
The sensitivity. The parameter, which determines the minimum illumination, in which you can withdraw a webcam.It, is measured in lux. This parameter is important if you intend to become an astrograph.
The number of frames per second (Frame rate). In cinematography they use the frame rate of 24 frames per second (fr /sec or fps). To communicate through the Internet rather 10-15 fps. That is why it is not difficult to make the conclusion.
Connection type (Connect). Basically, the camera is produced by USB. There are USB and USB2. USB 2 - is a faster interface, and it is more preferable. If you have an old computer, it is not bad. Webcam will work; simply fps and resolution images can be reduced.
Auto zoom. Webcam itself determines the distance to the object and sets the focal distance. It is mainly can be found in more expensive models of webcams.
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