9 (E)
Adjustment
Flange back adjustment of the
lens
Adjust the flange back of the lens as follows:
Refer to the “Operating procedure” on the page 13
as for details on zooming, focusing and iris operation
performed with the flange back adjustment.
Note
1
Select an object at an appropriate distance (6.6 ft. to
9.9 ft. [2 to 3 meters] recommended). A Siemens star
chart is perfect for this adjustment.
If no such chart is available, use any object that offers
sharp contrast to facilitate the adjustment work.
A Siemens star chart is a kind of pie chart consisting
of “slices” which narrow down toward the center, as
shown in the figure on page 12, and used to facilitate
focusing.
2
Open the iris of the lens fully.
3
Set the lens to the telephoto end by turning the zoom
ring.
4
Bring the object into focus by turning the focus ring.
5
Set the lens to the wide end by turning the zoom ring.
6
Loosen the flange back lock screw.
Flange back lock
screw
