A webcam is a special compact camera designed to work on the Internet. If your laptop or computer monitor does not have a built-in webcam or you are not satisfied with the image quality obtained from such a camera, you can choose from a large number of these devices on the market.
When choosing a webcam, you should be aware that there is no specific classification of cameras and there are no clear requirements for image quality. Therefore, it is imperative to review the image generated by the device before purchasing. Full HD cameras also require a reliable high-speed internet connection to work properly.
Matrix type
There are two types of matrices used in webcams - CCD and CMOS. The difference between the two lies in the way the image is processed. CCD type matrices give a better image, but they are much more expensive. Therefore, in most webcams, CMOS type matrices are installed. If such a device is supposed to be used with a face recognition program, then it is better to choose a CCD matrix.
Matrix resolution
The standard resolution for webcams is 640x480 pixels, which is 0.3 MPix. If the webcam is also supposed to be used for shooting home video, then it is better to choose a resolution of at least 1.3 Mpix - 1280 x 720 pixels. These HD cameras already have a good price-performance ratio. The maximum resolution for webcams is 5 MPx - 2592 x 1944 pixels, but such cameras require a high-quality high-speed Internet connection, otherwise the image will simply not be transmitted. Manufacturers are often cunning with this parameter and on the box with a 640 x 480 pixel camera you can see a proud inscription - 16 Mpix, but somewhere on the side the real resolution of the device will be indicated in small print.
Frame frequency
This parameter determines what image the interlocutor will see - a normal video or, roughly speaking, a kind of slide show. The minimum required frequency is 24 frames per second, the optimal one is 30. Some cameras operate at up to 90 frames, but this greatly increases the amount of transmitted information.
Extra options
Camera sensitivity is the ability to shoot in low light conditions. Important if you are going to shoot in the dark. Autofocus - This feature comes in handy when shooting in motion or moving objects. The built-in microphone is also very useful.
It is also worth paying attention to the method of attaching the webcam and connecting to the computer. Mostly USB 2.0 is used, but USB 3.0 can also be used. So you need to make sure in advance that the computer has the correct connection ports.
Webcam Defender G-lens 2693 Full HD
This camera features a fully automated system for adjusting shooting parameters. Suitable for both networking and home video shooting. A glass lens and a 2-megapixel CMOS matrix used in the camera provide a clear and detailed image. Camera resolution - 1920 x 1080, video recording rate - 30 frames per second. There is also a built-in microphone and an additional button that allows you to take photos with one click. The camera is connected via the USB 2.0 interface and does not require additional drivers for installation. The camera mount allows you to install it in a convenient place.
