Axis Network Camera AXIS 221 Guide d'installation télécharger pdf (Page 11)

AXIS 221/223M Installation Guide Page 11

ENGLISH

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

Underside of the camera

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Axis Network Camera AXIS 221 Guide d'installation Page 11