Canon A610 - Manual (Page 114)

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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).
„ Tele-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).
Using the Lenses (Sold Separately)
z When attaching the wide converter or tele-converter, be
sure to screw it on securely. If they come loose, they may
fall from the lens adapter, posing risk of injury from
shattered glass.
z Never look into the sun or into strong light through the
viewfinder when attaching the wide converter or tele-converter,
as this can result in blindness or impairment of vision.
z If you use the flash when shooting with these attachments,
the outer area of the recorded image (especially lower right
corner) will come out relatively dark.
z When using the tele-converter, please set the focal length
to the telephoto end. At other zoom settings, the image will
appear as if its corners have been cut off.
z When using the wide converter, please set the camera to
the wide angle end.
z If you use the viewfinder for shooting, a portion of the view
will be blocked by these attachments. Please use the LCD
monitor.
It is not possible to attach a lens hood or filter to the wide
converter or tele-converter.