Why do cameras use tripods instead of quadrupeds?

Because the camera on the tripod is stable.

You must have seen the tripod of the camera, which sticks out three long legs and supports the camera steadily, so the photos taken will not be blurred by the slight movement of the photographer's hand. In addition to the tripod of the camera, cameras used for shooting also have tripods, usually with auxiliary wheels on their feet to facilitate the camera's movement. Many things in our life are four-legged, such as tables, chairs, shoe racks and supermarket shelves. Aren't they all stable Why does the camera use a tripod instead of a tripod? This is because the camera uses a very important principle: three points that are not on a straight line can determine a plane, and only one plane can be determined, that is, the plane is unique and can only have one plane. There can't be a second one

The three feet of the camera form the vertices of a triangle, and they are not on the same straight line. According to the above characteristics, these three points only constitute the only plane at the bottom of the tripod. The camera on the tripod is firmly fixed on this plane, because it is the only plane, so the camera will not shake and will not affect the shooting effect. In our life, we also have this experience: sometimes because the ground is uneven, one of the chairs always moves one foot up and down, with one foot up and the other foot down, which makes the people sitting on it very uncomfortable. Because three points that are not on a line make up a plane, but the chair has four feet, which is equivalent to four points, three of which make up a plane, and the rest may or may not be on a plane.

If the fourth leg of the chair is not on the plane formed by the other three legs, that leg will sag and the chair will shake. If the camera uses a tripod, make sure that all four legs are stable on a flat surface at the same time. This requires that the ground must be very flat. If the ground is uneven, the camera will be unstable. Tables, chairs and shelves are generally placed indoors, and the ground is flat, but cameras may not be used all over the house. Sometimes it is necessary to take photos in the forest, and it is best to use a tripod. There is no requirement for a tripod on the ground. No matter what the ground conditions are, the camera can always be placed stably, which is why the camera uses a tripod.