The earliest video camera in the world was invented by Jules Jean Sang in 1874.
In p>1874, Jules Jean-Sang of France invented a camera. He wound the photosensitive film on a toothed film supply tray. Under the control of a pendulum mechanism, the film supply tray made intermittent film supply movement in a circular film supply box, and at the same time, the pendulum mechanism drove the shutter to rotate.
Every time the film stops, the shutter is opened for exposure. Janssen connects this camera with a telescope, and can take a group of photos of planetary motion at the speed of one per second. Janssen named it a photographic gun, which is the ancestor of modern movie camera +Y6R.
Extended information:
Types of cameras:
1. Broadcast-class models:
These models are mainly used in the field of radio and television, with high image quality and comprehensive performance, but they are expensive and bulky, with the highest definition, the highest signal-to-noise ratio and the best image quality.
2. Professional-grade cameras:
These models are generally used in professional TV fields other than radio and television, such as audio-visual education, and the image quality is lower than that of broadcast cameras. However, in recent years, some high-grade professional cameras have surpassed the old models in many aspects, such as performance indicators.
3. Consumer-grade models:
These models are mainly cameras suitable for home use, which are used in non-business occasions with low image quality requirements, such as home entertainment, etc. These cameras are small in size, light in weight, easy to carry, simple to operate and cheap in price.
Baidu Encyclopedia-Camera (historical background)