The aperture is the part of the camera that lets light in to reflect it off the film. The shutter closes to stop light from entering again, which captures a still picture of the moment. The shutter speed can be adjusted to create clearer images or let in less light. The aperture creates a unique opportunity to let light in for a longer period of time so that a slower shutter speed can be used.
It can also be adjusted to create a chance for less light to come in, so that a faster shutter speed can be used to capture a moment. For the best pictures, a high aperture and a fast shutter speed are key. Maximum light and maximum speed work together for crisp, clear photos.