I am interested in learning more about lenses and all the different kinds. Are there names for each one, is one brand better than the other. A few that I've heard of and can think of off the top of my head are Macro, Wide-Angle, Telephoto, and Fisheye lenses. What is the difference between these?? Gahh it seems there is just so much to know. I just want to be more educated on lenses and if anyone can help with the specifics, pros and cons, etc. that would tremendously appreciated. Thanks!