Well, I have a need for long reach, and am on a budget that doesn't allow me to buy any main brand glass. I don't need the sharpest or fastest glass avaliable, but something providing a little quality would be nice. Cameta Camera has two things on ebay: http://cgi.ebay.ca/500-1000mm-Mirro...oryZ3343QQssPageNameZWDVWQQrdZ1QQcmdZViewItem and http://cgi.ebay.ca/500-1000mm-Lens-...oryZ3343QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Edit, I also found this: http://cgi.ebay.ca/500mm-1000mm-Len...oryZ3343QQssPageNameZWDVWQQrdZ1QQcmdZViewItem Would these provide average-decent quality? Or am I wasting my money on garbage? If anyone has any shots from these lenses it would be superb, but I'm not expecting anything, because I've been hard pressed to find anything online about them. Secondly, what is the major difference, I know nothing about mirror-lenses...? I'm assuming that from the great focusing distance difference the mirror one would be better for macro... But I need to shoot things a long way away. Thanks!