Approximately 3m
Adjusting the Lens Flange Back
If images are not clearly focused at both telephoto and wide- angle positions during zoom operations, adjust the flange back (distance from the lens mounting surface to the image formation surface).
Once adjusted, the flange back does not need to be re- adjusted as long as the same lens is mounted on the camera.

Mounting the Lens and Performing the Flange Back

and White Shading Adjustments

Mounting the Lens1 Raise the lens clamping lever and remove the mount cap.

Lens Clamping

Lever

 

‹Note

Preparation

 

Please also refer to the lens instruction manual for directions

 

on adjustment and locations of individual lens parts.

 

1

Mount the lens on the camera.

Mount Cap

 

 

Make sure you connect the lens cable.

 

2 To mount the lens, align the indentation at the

 

 

2 Set the lens iris to manual, and fully open the iris.

 

top center of the lens mount with the center

 

 

 

 

mark of the lens.

 

 

 

Mark

 

 

 

3 Lower the lens clamping lever to clamp the lens.

 

3 Place the flange back adjustment chart about

 

3 m from the lens and adjust the lighting on

 

the chart to obtain an appropriate video

 

output level.

 

If the video level is too high, use the filters or the

 

shutter.

4 Secure the cable through the cable clamp, and4 Loosen the F.f (Flange focus) ring clamping
screw.
plug it into the LENS connector.

‹Note

 

 

F.b (Flange back) may be indicated on some lenses.

 

5 Set the zoom ring to the telephoto position,

 

either manually or by electric drive.

 

6 Aim the lens at the flange back adjustment

LENS Connector

chart and turn the distance ring to bring the
chart into focus.
5 Adjust the lens flange back.
7 Set the zoom ring to the wide-angle position

 

‹Notes

and turn the F.f ring to bring the chart into

z Please refer to the lens instruction manual for guidance

focus.

on lens handling.

While focusing, take care not to move the distance ring.

z When the lens is removed, install the mount cap to

 

protect the device.

 

Preparation: Mounting the Lens and Performing the Flange Back and White Shading Adjustments 111