Lenses are a major thing you want to be worried about when taking photographs. Depending on what type of photo you are trying to take, what you want the viewer to feel/see. A couple of the main lenses you will be using will be; normal, wide-angle, and a telephoto lens. A normal lens will be the “average” lens used when taking photos, this will be a 35 millimeter – 55 millimeter lens. This lens is meant for a “natural” look under normal viewing conditions. A wide-angle lens is when the focal length is smaller than the focal length of a regular lens. This would allow for more of the scene to be in the photo, when you (as the photographer) can not be moved far enough back to capture this extra scenery. This would be a 18-55 millimeter lens. A telephoto lens is a narrowing lens, which is smaller than a normal lens. This type of lens brings items from far away to the front, it extends the light path to create a long-focus lens in a much shorter overall design. The lens all depends on what the subject is you are photographing.