To say the shutter, we must start with the imaging principle of the camera
All cameras can be reduced to small-hole imaging models. A small hole is opened in the closed paper box, and the light enters the box through the small hole, and the shutter is like, adding a lid to the small hole can control the light entering the paper box
Academic definition: The shutter is a device used in camera equipment to control the time when light illuminates the photosensitive element.
The shutter is a door that can open and close quickly, how fast can the shutter be? 1/8000 (eight-thousandth of a second) is not a problem, 1/8000s = 0.000125 seconds (that’s that fast). But it can also be very slow, 10s, 30s can be, although not commonly used. The shutter is measured in seconds (s), and 1/50 of the shutter speed (fiftieth of a second = 0.02 seconds) in the figure (Canon interface) means that the camera will be exposed for 0.02 seconds after you press the shutter. No matter what brand of camera you use, if you see **/** (** in **) it means the shutter speed (sometimes you will also see 1s, 2s…). slow shutter).
Post time: Feb-24-2023
