Canon EF 70-300mm f4-5.6 IS USM - Manual (Page 11)

COP
Y
ENG-10
9. 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
Magnification
Distance (mm)
Near Far Near Far
EF12 II
70mm 584 638 0.22
Ч
0.17
Ч
300mm 1361 7629 0.32
Ч
0.04
Ч
EF25 II
70mm 420 428 0.40
Ч
0.38
Ч
300mm 1254 3890 0.39
Ч
0.09
Ч
Manual focusing is recommended for accurate
focusing.
8. 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.
¡ Only one filter may be attached.
¡ If you need a polarizing filter, use the Canon
Circular Polarizing Filter (58mm).
¡ To adjust the polarizing filter, first remove the
lens hood.