Adjusting The Flange Focal Length - Sony DFW-SX900 Instructions For Use Manual

Adjusting the Flange Focal Length

16
(GB)
Flange back hole
When using a zoom lens, it may be necessary to adjust the
flange focal length (the distance between the lens mounting
plane and the image plane). Once the flange focal length has
been adjusted, readjustment is not necessary as long as the
same lens is mounted on the camera.
You can adjust the flange focal length using a standard head
screwdriver.
1
Open the iris fully.
2
Point the camera at a subject approximately 3 meters
(10 feet) away.
3
Set the zoom in the telephoto position.
4
Turn the focus ring to focus on the subject while
observing the monitor screen.
5
Set the zoom in the wide-angle position.
6
Turn the flange focal length adjustment screw on the
camera until the same object is in focus.
Do not turn the focus ring while making this adjustment.
7
Repeat steps 3 to 6 until the subject is in focus both
when the zoom is in the telephoto position and when it
is in the wide-angle position.