Adjusting The Lens Flange Back - Panasonic AG-HPX500P Operating Instructions Manual

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
Aim the lens at the flange back
adjustment chart and turn the distance
ring to bring the chart into focus.
88
Mounting the lens and Performing the Flange Back Adjustment
7
Set the zoom ring to the wide-angle
position and turn the F.f ring to bring
the chart into focus.
• While focusing, take care not to move the
distance ring.
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.