Cameras can generally be classified according to their technical characteristics such as frame size, framing method, shutter mode, and metering method. They can also be classified according to their appearance and structure. The specific classification is as follows:
1. Cameras can be divided into film cameras, digital cameras and Polaroid cameras according to their different imaging media.
Film cameras mainly refer to devices that image images through a lens and record images using film. Digital cameras are photographic equipment that use semiconductor photoelectric coupling devices and digital storage methods to record images. They are easy to use, easy to transmit photos, and easy to save. Polaroid cameras, also known as one-time imaging cameras, sensitize images directly onto special photographic paper. Photos can be viewed within one minute, which is suitable for commemorative photos, etc.
2. According to the film and frame size used by the camera, it can be divided into 35mm cameras (often called 135 cameras), 120 cameras, 110 cameras, 126 cameras, medium format cameras, large format cameras, APS cameras, micro cameras, etc. The 135 camera uses 35mm film, and the standard format it shoots is 24mm X 36mm. Generally, each film can take 36 or 24 pictures.
3. According to the appearance and structure of the camera, it can be divided into a head-up viewfinder camera (VIEWFINDER) and a single-lens reflex camera (SLR camera). In addition, there are folding cameras, twin-lens reflex cameras, head-up rangefinder cameras (RANGFINDER), transfer cameras, landline phones, etc.
4． According to the shutter form of the camera, it can be divided into lens shutter camera (also called center shutter camera), focal plane shutter camera, program shutter camera, etc.
5. According to the functions and technical characteristics of the camera, it can be divided into automatic focusing cameras, electric metering manual exposure cameras, electric metering automatic exposure cameras, etc. In addition, there are shutter-priority, aperture-priority, program-controlled, dual-priority, electric winding (automatic winding and rewinding) cameras, autofocus (AF) cameras, date-back cameras, built-in flash cameras, etc.
Sometimes cameras can also be divided according to their purpose, such as professional cameras and consumer cameras (point-and-shoot cameras), one-step imaging cameras, and stereo cameras; sometimes they can also be divided into zoom or bifocal according to the characteristics of the lens. camera. In fact, a modern camera often has many characteristics and should therefore be defined in a comprehensive way.