Sigma 70-200mm f/2.8 APO EX DG HSM OS FLD Large Aperture Telephoto Zoom Lens for Canon Digital DSLR Camera : Camera Lenses : Electronics - Amazon.com
Amazon.com : Opteka 58MM 0.35x Fisheye Wide Angle Lens Compatible with Canon DSLR Cameras Including Macro Close Up Attachment : Camera Lenses : Electronics
Amazon.com : Opteka Voyeur Right Angle Spy Lens for Canon EOS Digital SLR Cameras (Attaches to 52mm and 58mm Threaded Lenses) : Camera Lenses : Electronics
Amazon.com : Camera Eyecup Eyepiece Replacement Viewfinder Protector Compatible with Canon EF EOS 300D 350D 400D 450D 500D 550D 600D 1000D 1100D 700D 100D Canon Rebel XT XTi XS XSi T1i T2