Canon EF-S 55-250mm f/4-5.6 IS EF-S55-250mm F4-5.6 IS Instruction Manual - Page 9

6 Filters (Sold Separately) You can attach filters to the filter mounting thread on the front of the lens. ¡The front end of the lens rotates, so hold it when attaching the filter. ¡Use a genuine Canon filter (58mm). ¡To adjust the polarizing filter, first remove the lens hood. 7 Extension Tubes (Sold Separately) You can attach Extension Tube EF12 II or EF25 II for magnified shots. The shooting distance and magnification are shown below. Camera-to-Subject Distance (mm) Near Far 55mm EF12 II 250mm 351 1075 411 5274 55mm 281 297 EF25 II 250mm 918 2692 Magnification Near 0.28× 0.60× 0.47× 0.46× Far 0.22× 0.05× 0.48× 0.11× Manual focusing is recommended for accurate focusing. ENG-8