Canon EF 16-35mm f/2.8L III USM EF16-35mm f/2.8L III USM Instructions - Page 11

7. Filters (sold separately) You can attach filters to the filter mounting thread on the front of the lens. ●●Attach the Canon PROTECT filter (82 mm) to get the best performance from the camera's dustand water-resistance. ●● Only one filter may be attached. ●● If you need a polarizing filter, use the Canon Circular Polarizing Filter PL-C B (82 mm). ●● Detach the hood when adjusting the polarizing filter. 8. 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. Focusing Distance Range (mm) Magnification (×) Close Long Close Long distance distance distance distance 16mm EF12 II 35mm 219 Incompatible 265 0.65 0.36 16mm EF25 II 35mm 214 Incompatible 229 1.14 0.80 MF mode is recommended for accurate focusing. ENG-10