I'm looking to get a wide angle lens for my father on his birthday. Looking to spend maybe $500 or so? Some others have suggested the Tokina 12-24mm. Looking at the prices (ebay), it's right under $500 shipped. My father already has a zoom lens (forget what kind), whatever came with the camera, and a macro lens. I think this wide angle would compliment it very well. He usually likes to take pictures of landscape. He likes to travel and I'm guessing would use this wide angle lens a lot. Do any of you guys have any suggestions? I'm thinking 12mm is good, and I think 10mm would be overkill. Also, I would like to ask a couple of things, along with your suggestions. 1) Please post a sample picture from the lens that is being suggested (if you can). 2) Please post a good site to get the said lens from. Thank you all in advance for any input.