Turn the zoom ring to the telephoto position.
Set the IRIS selector to the M position. Turn the iris ring to F/1.8 (fully open).

Adjusting the Lens

Flange Focal Length Adjustment

It is necessary to adjust the flange focal length (the distance from the lens flange to the plane of the image along the optical axis) in the following cases.

•When a lens is fitted for the first time •After changing lenses

•When during zoom operations the focus does not match properly from telephoto to wide angle

4,11

2

1

3

About 3 m (10 feet)

9

 

 

 

Test chart for flange

 

 

 

 

 

 

 

 

focal length adjustment

 

 

T

A

 

RET

W

M

IRIS

 

 

 

 

 

 

 

 

 

8

6

7

5

ZOOM

SERVO MANU.

1

2

3 Place the supplied test chart for flange focal length adjustment at a range of about 3 meters (10 feet), and adjust the lighting so that an appropriate video output level is obtained with the iris at F/1.8.

4 Loosen the F.B fixing knob.

5 Set the ZOOM selector to the MANU. position.

6

7 Turn the focus ring so that the test chart is in focus.

8 Turn the zoom ring to the wide angle position.

9 Turn the F.B adjustment ring so that the test chart is in focus. Do not move the focus ring.

10Repeat steps 6 to 9 until the image stays in focus from telephoto to wide angle.

11After adjustment, tighten the screw of the F.B fixing knob.

Settings and Adjustments 5 Chapter

Chapter 5 Adjustments and Settings

119