Panasonic AJ-SDX900p Operating Instructions Manual page 61

Chapter 5 Preparation
Adjusting the lens flange
If the subject is not focused properly in the telephoto and
wide-angle modes during zoom operations, adjust the flange
back (distance from the lens mounting surface to the image-
forming surface).
Once this adjustment is done, it need not be redone unless
the lens is replaced.
<Note>
For details on the adjustment method and lens positions, refer
also to the operating instructions that accompany the lens.
1
Attach the lens to the camera.
At this stage, do not forget to connect the lens cable.
2
Set the lens aperture to manual and open the aperture.
Approx.
3 meters
3
Set the lighting in such a way that the appropriate video
output level is achieved at a distance of about 3 meters
away from the chart used for the flange back adjustment.
If the video level is too high, use the filters and shutter.
4
Loosen the screw securing the F.f (flange focus) ring.
<Note>
On some lenses, this may be marked as F.b (flange back)
ring.
5
Set the zoom ring to the telephoto position either
manually or electrically.
6
Shoot the chart used for the flange back adjustment, and
turn the distance ring to adjust the focus.
7
Set the zoom ring to the wide-angle position, and turn the
F.f ring to adjust the focus.
Take care not to move the distance ring during this
process.
8
Repeat steps 5 to 7 until the focus is adjusted at both the
telephoto and wide-angle positions.
9
Tighten the screw securing the F.f ring.
Adjusting the white shading of the lens
The white shading is adjusted as follows.
<Note>
Coloring may occur in the vertical direction near where the
lens aperture is open even when the white shading has been
adjusted. This is something that is inherent to lenses and
optical systems and is therefore not indicative of a failure or
malfunctioning.
1
Attach the lens to the camera.
At this stage, do not forget to connect the lens cable.
2
Set the electronic shutter to OFF and the gain to "L (0
dB)."
3
If the extender is attached to the lens, release the
extender function.
4
Perform a menu operation to open the <GAMMA> screen
from the PAINT page, and check that "STD" is selected
as the GAMMA MODE SEL item setting. Then open the
<VF DISPLAY> screen from the VF page, check that the
settings selected for the ZEBRA1 DETECT item, ZEBRA2
DETECT item and ZEBRA2 item match the settings
shown in the figure below.
appropriate changes, and then close the menu screen.
#
5
Set the ZEBRA switch on the viewfinder to ON.
6
Shoot a white sheet of paper with no unevenness of
color.
<Note>
Since fluorescent lights, mercury lamps and other such
kinds of lighting tend to flicker, use a light source which is
free from flicker such as sunlight or a halogen lamp.
7
Set the lens aperture control to manual, and adjust it so
that the zebra pattern covers the whole screen. Check
that the lens aperture is between F4 and F11.
<Notes>
≥ The zebra pattern will not cover the whole screen if
there is any unevenness in the lighting. In this case,
make adjustments to the position of the lighting, etc.
≥ Make adjustments to the position of the lighting, etc.
also when the lens aperture is not between F4 and F11.
≥ Be absolutely sure to leave the electronic shutter at
OFF.
If they differ, make the
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