Extension Tubes (sold separately) You can attach extension tube EF12 II or EF 25 II for magnified shots. The focusing distance and magnification are shown below.
Specifications Focal Length/Aperture 50 mm f/2.8 90 mm f/2.8 135 mm f /4 Lens Construction 12 elements in 9 groups 11 elements in 9 groups 11 elements in 7 groups Minimum Aperture
Close-up Lens (sold separately) TS-E50 mm f/2.8 L MACRO Attaching a 500D (77 mm) Close-up Lens enables close-up photography. It provides a magnification of 0.10x to 0.58x.
Filters (sold separately) Use a Canon circular polarizing filter PL-C B. TS-E50 mm f/2.8 L MACRO and TS-E90mm f/2.8 L MACRO: 77 mm TS-E135mm f/4L MACRO: 82mm