Once this exposure time has elapsed, the shutter closes and the sensor is no longer exposed to light.
This is known as a 2 second exposure time. Shutter speed controls the exposure time.įor example, a shutter speed of 2 seconds, exposes the image sensor to light for 2 seconds. Mirrorless cameras do not. Other than this fact shutter speed works in the same manner for both.
Technical Note: DSLR cameras have a physical shutter. When you push the shutter button to take an image, the shutter opens and the sensor is exposed to light for the amount of time denoted by the shutter speed setting. When the shutter (door) is open the sensor starts collecting light information from the scene.When the shutter (door) is closed, the sensor does not collect light information from the scene.Think of a camera shutter as a door, inside the camera body, that covers the camera sensor. This is also a factor in determining image brightness. Shutter speed controls the length of time the sensor is exposed to light from the scene.
The camera sensor collects & records light information about the scene being photographed. To create an image, light passes through the lens aperture where it’s exposed to the camera sensor.
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