Im kind of confused. Wide angle, super wide angle, telephoto, telephoto zoom, zoom? Is telephoto just a lens that zooms? Like a 55-200? And a wideangle is just like 18-55?? And a superwide angle would be like 12-24? And the only reason why anyone would buy another wide angle assuming theres came with an 18-55mm kit lens is either they want it faster or they want like a 17-70 or something right? What are the main categories of the lenses?