What is a camera s?

Camera s represents shutter priority or shutter priority, and the value inside represents shutter speed. The higher the value, the shorter the shutter time. Shutter priority is mostly used to shoot moving objects, especially sports shooting.

When shooting a moving object, the subject is blurred, mostly because the shutter speed is not fast enough. In this case, you can use the shutter priority mode, roughly determine a shutter value, and then shoot.

Camera structure:

As far as the function of photography is concerned, a camera should have three structural systems: imaging, exposure and assistance. The imaging system includes imaging lens, ranging and focusing, framing system, additional lens, filter, effect mirror and so on. Exposure system includes shutter mechanism, aperture mechanism, metering system, flash system, self-timer mechanism, etc. The auxiliary system includes a film winding mechanism, a counting mechanism and a film rewinding mechanism.

Lens is an optical system for imaging, which consists of a series of optical lenses and lens barrels. Each lens has two characteristic data: focal length and relative aperture. The viewfinder is a device for selecting scenery and composition. Everything you can see through the viewfinder can be shot on film. A rangefinder can measure the distance of a scene, and it is often combined with a viewfinder. Through the linkage mechanism, ranging can be linked with lens focusing and focus can be completed at the same time.