Hey, I am looking to trade my telephoto lens for an equal quality wide-angle for Canon Lens I own: Sigma 70-200mm 2.8 for Canon cameras. It is brand new, has only been used once, mint condition. The only reason I want to give it up is because I am taking a trip to Africa in January, and I decided that a wide-angle lens (which I do not own) would be more important to have with me than the purchased telephoto lens would be (which I may only use once, and can rent). The downfall is that I stupidly threw away the box, but I do have the bag, tripod mount, lens hood and manual it came with. It is, however, in perfect condition. Lens I want: I would love to trade for a quality Canon or Sigma wide-angle lens, with it's widest opening being no more than 17mm, but preferably around 10-20mm. If you're interested in only purchasing this lens, I can do that if no one wants to trade. I purchased it for $700 brand new, so I'd let it go for $600. Thanks!!