Canon POWERSHOT A60 User Manual page 201

The camera supports use of the optional Wide Converter
WC-DC52, Tele-converter TC-DC52 and Close-up Lens
250D (52 mm). In order to attach any of these lenses, you
also need to use the optional Conversion Lens Adapter
LA-DC52C.
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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 0.7 (The thread diameter is 52 mm.).
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