What do you mean by the big aperture of the camera?

The large aperture of a camera means that the exposure of a photo is determined by both the aperture and the shutter. Under the same exposure, the larger the aperture, the faster the shutter. In places with poor light, a lens with a large aperture can ensure a faster shutter speed, and the picture can also be guaranteed in the hand-held state. If the light is dim, open the aperture.

Camera, full name camera, is a kind of equipment that uses optical imaging principle to form images and record images with negative. A camera is an optical instrument used for photography. After the light reflected by the photographed scene is focused by the photographic lens and the shutter controlling the exposure, the photographed scene forms a latent image on the photosensitive material in the camera box, and the latent image is developed to form a permanent image. This technology is called photography. After 1939, it is the third stage of camera development. In the first half of this stage, that is, before the 1960s, the quality of black-and-white and color films was further improved, and the optical industry produced new optical glasses containing rare elements such as lanthanum, titanium and cadmium. So as to better correct the aberration of the photographic lens, and the lens develops rapidly in the direction of large aperture and various focal lengths. So there are many kinds of photographic lenses, such as zoom, emblem distance, catadioptric and wide angle. Single-layer coating of lenses has been widely used. There are some structures in the camera, such as automatic reset of counter, automatic reset of mirror, semi-automatic and full-automatic contraction of aperture. The quality and output of cameras began to develop rapidly.