Canon A20 - Manual (Page 103)

101
Attaching a Lens
1
Be sure that the camera is
turned off.
2
Attach the dust cap to the
adapter as shown in the
illustration on the opposite page.
3
Push the adapter against the ring
around the lens and turn it in the
indicated direction while
pressing on it to remove the ring.
4
Remove the dust cap, and
attach the adapter by turning
it in the indicated direction.
5
Set the lens on the adapter,
and attach it by turning it in
the indicated direction.
Attaching the wide
converter
Dust cap
Ring