Operating Instructions

90
Chapter 5 Preparation
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.
 NOTE
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.
• Make sure you connect the lens cable.
2
Set the lens iris to manual, and fully open the
iris.
Approximately 3 m
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
Loosen the F.f (Flange focus) ring clamping
screw.
 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
Shoot the flange back adjustment chart and
turn the distance ring to adjust focus.
7
Set the zoom ring to the wide-angle position
and turn the F.f (flange focus) ring to adjust
focus.
• Do not move the distance ring during focusing.
8
Repeat Steps 5 to 7 until the lens is in focus at
both the telephoto and wide-angle positions.
9
Firmly tighten the F.f ring clamping screw.