Using The Lenses (Sold Separately); Wide Converter Wc-Dc58N; Tele-Converter Tc-Dc58N - Canon POWERSHOT A630 User Manual

The camera supports use of the separately sold Wide Converter
WC-DC58N and Tele-converter TC-DC58N. In order to attach
these lenses, you also need to use the separately sold Conversion
Lens Adapter LA-DC58F.
"Wide Converter WC-DC58N
Use this converter for taking wide-angle shots. The wide converter
changes the focal length of the camera body's lens by a factor of
0.7x (the thread diameter is 58 mm).
IlTele.converter TC-DC58N
This lens is used for taking telephoto shots. The lens changes the
focal length of the camera body's lens by a factor of 1.75x (the
thread diameter is 58 mm).
It is not possible to attach a lens hood or filter to the wide
converter or tete-converter.