User manual

Installation sinaCAM
22 Rev.: E User Manual
7.11 Adjusting the Flange Back Distance
If the focus is sharp when zoomed in, but soft when zoomed out, the back focus may need adjustment.
sinaCAM remote heads allow for easy back focus adjustment by changing the flange back distance
between the rear of the lens and the CCD. Use typical back-focusing techniques, e. g. a test chart or a
back focus collimator.
NOTICE
Wrong flange back distance adjustment can cause unsatisfactory shooting quality. Flange back distance
adjustment should only be performed by experts.
Figure 14: Flange Back Distance Adjustment
To adjust the flange back distance follow these steps:
 Lift up the locking lever (A).
 Turn the adjustment ring (B) until the flange back distance is accurately set
(± 1 rotation = ±250 µm):
– To decrease the distance turn to the right (-).
– To increase the distance turn to the left (+).
 Push down the locking lever.
 Check the adjustment with a control measurement.