Amazon.com : 58mm UV CPL ND4 Circular Polarizing Filter Kit Set + Lens Hood for Canon Camera : Electronics
Amazon.com : High Definition 67mm CPL Circular Polarizing Filter for Canon EF 70–200mm USM Lens, Canon EF 70−300mm USM Lens, Canon EF 35mm f/2 is USM Lens & Canon EF 100mm f/2.8L
Amazon.com : Canon EF-S 18-55mm f/3.5-5.6 is, Compatible Digital Multi-Coated Circular Polarizer Filter (CPL - 58mm) : Electronics