Axis 221 Guia De Instalacion página 11

AXIS 221/223M Installation Guide
Back focus adjustment
When the lens is changed to a non-
standard lens or when the focus
achieved using the instructions above
is not satisfactory, perform back focus
adjustment as follows:
1. Loosen the screw that holds the C/
CS-ring. C is standard for AXIS
223M and CS for AXIS 221.
2. Direct the camera towards an
object at least 7 meters away, set
the zoom puller to max wide and check if it is possible to focus the lens.
3. Set the zoom puller to max tele and again check if it is possible to focus the lens.
4. Direct the camera towards a close object, about 30cm away, and set the zoom puller to
max wide and check if it is possible to focus the lens.
Set the zoom puller to max tele and again check if it is possible to focus the lens.
5. If it is not possible to focus the lens in any of the four situations above, adjust the C/CS-
ring, and go back to step 2.
6. Tighten the screw that holds the C/CS-ring again.
7. After making the back focus adjustment as explained above, adjust the zoom and focus
position for the desired view.
screw holding
C/CS ring
C/CS ring
Underside of the camera
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