Panasonic AJ-CX4000GJ Pro 4K/HDR Streaming Camcorder with B4 Lens Mount

User Manual - Page 38

For AJ-CX4000GJ.

PDF File Manual, 245 pages, Read Online | Download pdf file

AJ-CX4000GJ photo
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38 –
Chapter 3 Preparation — Mounting and adjusting the lens
Adjusting lens ange back
If images are not clearly focused at both telephoto and wide-angle positions during zoom operations, adjust the ange back (distance from the lens
mounting surface to the image formation surface).
Once adjusted, the ange back does not need to be readjusted until the lens is changed.
@
NOTE
t Refer to the lens operating instructions for guidance on adjustment methods and positions of lens parts.
Approximately 3 m
1
Mount the lens on the camera.
Make sure to connect the lens cable.
2
Set the lens iris to manual, and fully open the iris.
3
Place the flange back adjustment chart approximately 3 m from the lens and adjust the lighting on the chart to obtain an
appropriate image output level.
If the image level is too high, use the lters or the shutter.
4
Loosen the F.f (Flange focus) ring clamping screw.
5
Set the zoom ring to the telephoto end 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.
7
Set the zoom ring to the wide-angle end position and turn the F.f (Flange focus) ring to bring into focus.
At this time, do not 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 (Flange focus) ring clamping screw.
@
NOTE
t F.b (Lens ange back) ring may be indicated on some lenses as the F.f (Flange focus) ring.
White shading compensation function
Adjusting the white shading
This is a method of combining the sawtooth shaped waveform and parabola waveform to compensate to a atter waveform based on the respective R,
G and B waveforms of the video signal.
We recommend adjusting the R, G and B waveforms in the horizontal and vertical directions while monitoring them on the waveform monitor.
Before adjusting the white shading, make sure to cancel [DS.GAIN] and [D.ZOOM] set to the USER button.
H SAW
H PARA
Before white shading
compensation
After white shading
compensation
1
Set the camera for adjustment.
1) Mount the lens on the camera.
f Make sure to connect the lens cable.
2) Set the <SHUTTER> switch to <OFF>, and the <GAIN> switch to <L> (0 dB).
3) If the lens is equipped with an extender function, release the extender function.
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