Canon EF-S 10-22mm f3.5-4.5 USM - Manual (Page 7)

ENG-6
5 Filters (Sold Separately)
You can attach filters to the filter mounting
thread on the front of the lens.
¡ Only one filter may be attached.
¡ If you need a polarizing filter, use the Canon
Circular Polarizing Filter (77mm).
6 Extension Tubes (Sold Separately)
You can attach Extension Tube EF12 II for
magnified shots. The shooting distance and
magnification are shown below.
Although Extension Tube EF25 II can be attached,
it is not recommended because the lens-to-subject
distance will be very short.
Camera-to-Subject
Magnification
Distance (mm)
Near Far Near Far
EF12 II
10mm Incompatible
22mm 155 165 0.77
Ч
0.58
Ч
Manual focusing is recommended for accurate
focusing.
COP
Y