What does camera zoom mean?

Camera zoom is like a telescope, which can zoom in (enlarge) the scene. The higher the magnification, the closer you can see. At present, there are two zoom methods: digital zoom: zooming the scene through software, just like using zoom effect on a computer; Optical zoom: zoom the scene through a lens composed of multiple lenses.

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. 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.