what does shutter speed do

Shutter speed in photography refers to the length of time the cameras shutter remains open, exposing light onto the camera sensor. It determines the duration for which the camera sensor is exposed to light, affecting the brightness of the image and the ability to freeze or capture motion. A fast shutter speed creates a shorter exposure, allowing the camera to freeze fast-moving subjects and capture sharp, in-focus images. On the other hand, a slow shutter speed results in a longer exposure, which can create motion blur in moving subjects and capture more light, resulting in brighter images. Therefore, shutter speed is a crucial element in photography that allows photographers to control the exposure and creatively capture motion or freeze a moment in time.