What does the shutter in the camera mean?

A shutter is a device that blocks light from entering a lens. Generally speaking, the larger the shutter time range, the better.

The shutter of the camera is the "door" through which light passes, and the film reflects light quickly. Only by opening and closing properly can a good image be formed. Short time and insufficient exposure time can not form a clear image. After a long time, it will be overexposed, and it will not show the level and details of the image. This door is always closed. When we adjust the camera through the viewfinder and press the shutter, the film has recorded the scene we want to shoot.

: camera

A camera, referred to as a camera for short, is a device that uses the principle of optical imaging to form an image and records the image with a negative. Many devices that can record images have the characteristics of cameras. Medical imaging equipment, astronomical observation equipment, etc.

A camera is an optical instrument used for photography. After the light reflected by the shot scene is focused by the camera lens (scene lens) and the shutter for controlling exposure, the shot scene forms a latent image on the photosensitive material in the camera box, and forms a permanent image after being developed and fixed. This technology is called photography. Divided into general photography and professional photography.

Digital camera is a kind of camera that uses electronic sensors to convert optical images into electronic data. Different from the principle that ordinary cameras record images on film through the chemical changes of silver bromide, the sensors of digital cameras are light-induced charge-coupled -{zh-cn: devices; Zh-tw: Component }-(CCD) or complementary metal oxide semiconductor (CMOS). Before an image is transmitted to a computer, it is usually stored in a digital storage device (usually using flash memory; Floppy disks and rewritable compact discs (CD-RW) are rarely used in digital camera equipment.

Digital camera is a product integrating optics, machinery and electronics. It integrates the conversion, storage and transmission of image information, and has the characteristics of digital access, interactive processing with computer and real-time shooting. Digital cameras first appeared in America. More than 20 years ago, the United States used it to transmit photos to the ground via satellite. Later, digital photography was converted to civilian use, and its application scope continued to expand.