In photography, shutter speed or exposure time is the length of time when the film or digital sensor inside the camera is exposed to light, also when a camera’s shutter is open when taking a photograph. The amount of light that reaches the film or image sensor is proportional to the exposure time. We use the shutter speed to control the exposure. Today, we used 3 different shutter speeds: fast, medium and slow.
We started off with the fast shutter speed at 1/250 which allows little light into the lens and to the image sensor and for this reason the shutter does not have to be open for a long time. The fast shutter speed freezes any movement.
In these images a medium shutter speed of 1/30 was used. The images are blurred because of medium shutter speed and fast movement of the person.
This image was took with the slow shutter speed of 1″ (1 second). The light does not have to as bright as it has to be for fast shutter speed because the slow shutter speed allows more light in a longer amount of time. The shutter stays open longer compared to the fast shutter speed, to allow the light in. Longer shutter speeds result in increased exposure.