Adjusting The Lens; Flange Focal Length Adjustment - Sony Power HAD EX DXC-D55PK Operating Instructions Manual

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.
4,11 2 1
9
8
1
Set the aperture selector to the M position.
2
Turn the aperture ring to f/1.8 (fully open).
3
Place the supplied flange focal length adjustment
test chart at a distance of about 3 meters (10 feet),
and adjust the lighting so that an appropriate video
output level is obtained with the aperture at f/1.8.
4
Loosen the F.B fixing screw.
5
Set the ZOOM selector to the MANU. position.
6
Move the manual zoom control to the telephoto
position.
86
Chapter 5 Adjustments and Settings
6 7
• 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
About 3 m (10 feet)
5
ZOOM
SERVO MANU.
7
Turn the focusing ring so that the test chart is in
focus.
8
Move the manual zoom control to the wide angle
position.
9
Turn the F.B adjustment ring so that the test chart
is in focus. Do not move the focusing ring.
10
Repeat steps 6 to 9 until the image stays in focus
from telephoto to wide angle.
11
After adjustment, tighten the F.B fixing screw.
3
Flange focal length
adjustment test chart