APERTURE vs. SHUTTER
Aperture: a device that controls the amount of light that reaches the film or sensor. This is also called the f-number.
-small aperture: the advantage to having a small aperture is it increases the depth-of-field. An increased depth-of-field allows you to take pictures of landscapes in very sharp focus. This also you to use a slow shutter speed.
-large aperture: A large aperture allows more light to reach the sensor which also allows you to use a faster shutter speed.
Shutter Speed: the amount of time the shutter stays open while talking a photograph
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