Located in front of the camera sensor, a leaf shutter has overlapping metal blades that close so no light passes through to the sensor. When you press the camera’s shutter button, the blades open to allow light to pass through.
After the sensor is done collecting the light, the shutter closes immediately, stopping the light from hitting the sensor. The button that fires the camera is also called “shutter” or “shutter button”, because it triggers the shutter to open and close.
Where is the shutter speed on a camera?
Shutter speed is the second corner of the exposure triangle and simply defined, is the amount of time your film or digital camera’s sensor is exposed to light. When we take photographs, we open the camera to the elements, allowing light to pour in and the framed image to be permanently captured.