Canon A540 - Manual (Page 111)

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The camera supports use of the separately sold Wide Converter
WC-DC52, Tele-converter TC-DC52A and Close-up lens 250D
(52mm). In order to attach these lenses, you also need to use the
separately sold Conversion Lens Adapter LA-DC52F.
#
Wide Converter WC-DC52
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 52 mm).
#
Tele-converter TC-DC52A
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 52 mm)
Using the Lenses (Sold Separately)
(PowerShot A540 only)
! When attaching the wide converter, tele-converter or
close-up lens 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.
! Never look into the sun or into strong light through the
viewfinder, wide converter, tele-converter or close-up lens as
this can result in blindness or impairment of vision.
! 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.
! 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.
! When using the wide converter, please set the camera to
the wide angle end.
! If you use the viewfinder for shooting, a portion of the view
will be blocked by these attachments. Please use the LCD
monitor.