Hello I know this is rather a dumb question. I just got a Tokina 11-16mm lens f/2.8(for Nikon DX), and that's the only lens I own so far. Is this a good lens to own as the first lens? How can I use this lens? What is this for? Should I return it and get something else? Could you explain what I should be using this lens for? Excuse me for a silly question, but this lens is pretty wide, and I don't know what we are supposed to use this kind of lens for. Also it's f/2.8, so I could possible use it in poor lighting? I'm in a position of being able to return this to the shop, so if you could suggest me a better lens as my first lens, I'd appreciate your opinion. Thank you very much.