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112
Preparation: Mounting the Lens and Performing the Flange Back and White Shading Adjustments
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.
Method to correct the waveform to be more flat by
combining the sawtooth-shaped waveform and the
parabola waveform when watching the respective
waveforms of R, G and B of the video signals.
Adjust the white shading in the following manner after
turning OFF the DS. GAIN and D.ZOOM.
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 Open the <GAMMA> screen from the PAINT
page using the menu operation to confirm that
GAMMA MODE SEL is set to “HD”. Then, open
<VF DISPLAY> from the VF page to confirm
that ZEBRA1 DETECT and ZEBRA2 DETECT
are the same as shown in the following
illustration. If they are not the same, revise the
settings and 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
z 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.
z Make adjustments to the position of the lighting, etc.
also when the lens aperture is not between F4 and F11.
z Be absolutely sure to leave the electronic shutter at
OFF.
8 1Set the WHITE BAL selector switch to “A”
or “B,” and use the AUTO W/B BAL switch
to adjust the white balance automatically
(AWB).
2Use the AUTO W/B BAL switch to adjust the
black balance automatically (ABB).
3Again, use the AUTO W/B BAL switch to
adjust the white balance automatically
(AWB).
9 Repeat step 7.
10
Using the menu operation, open the <WHITE
SHADING> screen from the MAINTENANCE
page and a range of items from R H SAW item
to B V PARA item, so that the waveform is
more flat.
Adjusting the Lens White Shading
#
< VF DISPLAY >
DISP CONDITION :NORMAL
DISP MODE :3
VF OUT :Y
VF DTL :05
ZEBRA1 DETECT :070%
ZEBRA2 DETECT :085%
ZEBRA2 :SPOT
LOW LIGHT LVL :35%
RC MENU DISP. :OFF
50M INDICATOR. :OFF
MARKER/CHAR LVL :50%
SYNCHRO SCAN DISP. :
sec
< WHITE SHADING >
CORRECT :ON
#
R H SAW :+000
R H PARA :+000
R V SAW :+000
R V PARA :+000
G H SAW :+000
G H PARA :+000
G V SAW :+000
G V PARA :+000
B H SAW :+000
B H PARA :+000
B V SAW :+000
B V PARA :+000
H SAW
H PARA
Before
correction
After
correction
AJ-HPX3100G(VQT3A79)_E.book 112 ページ ２０１０年９月１７日 金曜日 午後９時２１分