Camera types of broadcast cameras

Mainly used in the field of radio and television, they have high image quality and comprehensive performance, but the price is higher and the volume is relatively large. According to the different purposes of use, they can be divided into the following three types:

One is the studio camera. Studio cameras work under conditions that are conducive to camera operation, such as moderate lighting intensity and color temperature. In order to improve performance indicators, larger camera devices are usually used. Therefore, they have the highest definition, the largest signal-to-noise ratio, and the best image quality. Of course, the size is also large and the price is not affordable to ordinary people.

The second is the news gathering (ENG) camera. Due to the special working environment of this kind of camera, this type of machine is small in size, light in weight, easy to carry, and has good adaptability to non-standard lighting conditions. It has relatively high safety and stability in the environment (such as a wide range of changes in operating temperature), and has the characteristics of convenient debugging, high degree of automation, flexible control, and easy portability. Its image quality is slightly lower than that of studio cameras, and its price is relatively cheap. some.

The third is the live program production (EFP) camera. The working conditions of the EFP camera are between the above two cameras, and the performance indicators also take into account these two aspects. Their image quality is similar to that of studio cameras, but they are smaller and can meet the needs of lightweight live production.

In recent years, cameras have developed in the direction of high quality, solidification, miniaturization, automation, and digitization. There are no obvious boundaries between the above three types of broadcast cameras. For example, Japan's SONY BVP-70P EFP camera, whether in portable or studio equipment, represents the technical level of modern cameras.

The horizontal resolution of broadcast cameras is generally above 700 lines, and the price is generally between tens of thousands to hundreds of thousands (RMB). Generally used in professional television fields other than radio and television, such as audio-visual education, industry, medical care, etc. This kind of camera is required to be lightweight and cheap, and the image quality is lower than that of broadcast cameras. Professional cameras keep up with the development of broadcast cameras and are updated very quickly. Especially in recent years, the quality level of CCD camera devices has been greatly improved. High-end professional cameras have surpassed broadcast-level cameras in many aspects such as performance indicators. Their clarity, signal-to-noise ratio, sensitivity and other important indicators have become as good as broadcast-level cameras. There is not much difference between cameras, except that they are slightly inferior to broadcast cameras in terms of color reproduction and automation.

The horizontal resolution of professional-grade cameras is generally above 500 lines, and the price generally ranges from tens of thousands to hundreds of thousands of yuan. Home cameras are mainly used in non-business situations where image quality is not high, such as home and entertainment. Their horizontal resolution is about 250-450 lines and the signal-to-noise ratio is about 50dB. This type of camera is small in size, light in weight, easy to carry, and has a certain degree of concealment. In addition to being used for personal and family entertainment, this type of camera is also often used for shooting under many special conditions, such as sports stunt cameras. The head can be installed on On the protective mask of the referee; in motorcycle competitions, small cameras are installed on motorcycles to take pictures, monitor, etc. from the perspective of the athletes. The biggest features of home cameras are simple operation and low price. They have been widely used in household consumption in developed countries, so they are called home cameras. In situations where the requirements are not high, using it to produce general programs and burn your own VCDs and DVDs should be a cost-effective choice.

The horizontal resolution of home cameras is generally around 250 to 400 lines, and the price generally ranges from several thousand to ten thousand yuan.