Choosing a webcam A4Tech

The development of modern technologies is very quickly, and now you can communicate with people for thousands of kilometers not only by phone, but also through video call. This requires just a small detail – webcam.

Choosing a webcam A4Tech

Peculiarities

The webcam was released in 1991. Its use was quite interesting. She was located in the University of Cambridge, where a group of scientists worked. Her task was to track the presence of coffee in a coffee maker. For her, special software was written, and from any computer located in the laboratory, it was possible to connect via the client connection where the image in real time was broadcast.

Today they have become more advanced, and use them for calls and conferences, for video surveillance and photographs on the rack of registration. Feature of video information – more attention is paid to the speed of information transfer, not a picture and sound.

There are lineups of webcams with a rotary device, a circular video surveillance function is built in them.

Matrix – the base of the mini-chamber. To date, two main:

  • CMOS – sensory matrix;
  • CCD – the matrix of this format transmits a picture of high quality with low noise level.

It is important for quality work to have a good Internet connection and quite bright lighting.

Choosing a webcam A4Tech

Connecting the device is two types:

  • Wired – work occurs via a USB connector;
  • Wireless-connection, consisting of two parts – transmitter and receiver, Wi-Fi is usually used to pass the signal.

Camera fixation occurs in several ways:

  • Mounting on the monitor – attached to a laptop or on a stationary computer monitor;
  • Desktop – have a steady mount, it is convenient to be located on any flat surface;
  • Universal – made with a special clamp in the form of a stand, easily placed on any surface.

Choosing a webcam A4Tech

Choosing a webcam A4Tech

Choosing a webcam A4Tech

Modern webcams can be found any color solution ranging from classic black and white flowers to neon bright and gold.

Many cameras have additional features:

  • Built-in microphone;
  • illumination;
  • autofocus;
  • Face Tracking Function.

These functions are not included in the basic webcams, these options have more complex series of cameras, but additions inclusively increase the cost of the device, the A4Tech brand produces a ruler available to the owner of any budget.

Choosing a webcam A4Tech

Choosing a webcam A4Tech

The lineup

The range of cameras is extensive, all of them are made with the original design, and Each line has its functionality.

  • Models with standard permissions. This line includes A4Tech PK-8MJ, having an unusual case, thanks to which you can adjust the height of the device. Has the ability to make an instant frame. Fastening table.

Choosing a webcam A4Tech

Choosing a webcam A4Tech

Choosing a webcam A4Tech

  • With folding corps. The line is represented by the camera A4Tech PK-810G. Externally, the camera is a small rectangular block connecting with a flexible cable support. Wired connection via USB.

Image focus occurs independently, accompanied by sound.

Universal web device stand.

Choosing a webcam A4Tech

Choosing a webcam A4Tech

Choosing a webcam A4Tech

  • Device on a flexible base – A4Tech PK-333E. The case is made in classic design, externally similar to the DVR. Cloves. The possibility of rotation of the camera is 360 degrees.

No microphone manufacturers compensated for the possibility of night shooting and the presence of infrared illumination.

Choosing a webcam A4Tech

Choosing a webcam A4Tech

Choosing a webcam A4Tech

High Resolution Webcams – A4Tech PK-910H Series. Connection, as in previous models occurs via USB. The viewing angle is 60 degrees. The main advantage is systemic compensation of colors, which provides a good picture even with weak lighting. The presence of the “Multi-Sembam” system smoothes distortion in video connection mode.

    Camera with microphone and external noise suppression function.

    Choosing a webcam A4Tech

    Choosing a webcam A4Tech

    Selection criteria

    The first and most important criterion from which should be repeated when choosing a webcam is the purpose of using the device. For home calls over the Internet, more simple models are suitable if the device is purchased for official events, high-quality images are needed with high-resolution models.

    Key properties that should be relying when buying a camera:

    • type of matrix;
    • Resolution is one of the most important parameters on which the image quality depends;
    • sensitivity;
    • the number of frames transmitted per second;
    • focusing;
    • connection type;
    • additional functions.

    Choosing a webcam A4Tech

      Webcams have a different set of characteristics, but the main criteria for choosing them are similar. Depending on their price, they are equipped with additional features and have a unique external design. In addition, some models have the possibility of video surveillance and equipped with a motion sensor.

      The following video presents a brief overview of the A4-TECH PK-770G webcam.

      Rate article
      ( No ratings yet )
      Share to friends
      Rebuildhom.info - construction and repair, dacha plot, apartment and country house, useful tips and photos
      Add a comment