Canon will give you back $100 when you buy the Canon EF 100-400mm f/4.5-5.6L IS USM lens, or $50 when you get the Canon EF 17-40mm F/4L USM lens.
This is part of an instant cash back offer by Canon on select EOS lenses. The offer is good until July 17, 2007.
You don’t have to mail in any paper work. This cash back promo authorizes the dealer to give you a discount on the spot, which effectively means Canon is lowering their prices during the promo period.
The full list of selected EOS lenses qualified for the promo:
Canon EF 100-400mm f/4.5-5.6L IS USM Lens
Canon EF 17-40mm F/4L USM Lens
Canon EF 180mm f/3.5L Macro USM Lens
Canon EF 24-70mm F/2.8L USM Lens
Canon EF 28 F1.8 USM Lens
Canon EF 400mm F/5.6L USM Lens
Canon EF 50 F1.4 USM Lens
Canon EF 70-200 F4L USM Lens
Canon EF 70-200mm f/2.8L USM Lens
Canon EF 70-200mm F/4L IS USM Lens
Canon EF 70-300mm F/4.5 – 5.6 DO IS USM Lens
Canon EF 85mm F1.2L II USM Lens
Canon EF-S 17-55mm f/2.8 IS USM Lens
Canon EF-S 60 f/2.8 Macro USM Lens
[Site: Canon USA]