Canon lowered the list price of the Canon EF-S 10-22mm f/3.5-4.5 USM SLR Camera Lens, model no. 9518A002, to $649. Several stores, including B&H Photo Video, Amazon, Adorama, and PC Nation, offer it for $599 with free shipping. That's $50 under our December mention of this lens and the lowest total price we could find. This lens is compatible only with the 1.6x crop Canon SLRs; the 50D, 60D, Rebels, etc.