Filter Mounting Thread - Canon EF-S18 Instruction

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Filters (Sold Separately)
You can attach filters to the filter mounting
thread on the front of the lens.
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Only one filter may be attached.
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If you need a polarizing filter, use the Canon
Circular Polarizing Filter (72mm).
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To adjust the polarizing filter, first remove the
lens hood.
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Extension Tubes (Sold Separately)
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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
I
Far
Near
I
Far
EF12 II
18mm Incompatible
200mm 332
I
3298 O.39x
I
O.06x
EF25 II
18mm Incompatible
200mm
277
I
1648 O.56x
I
O.14x
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Manual focusing is recommended for accurate
focusing.