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102
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.
White shading adjustment is disabled when the DS. GAIN
is turned ON or the LINE MIX GAIN function operates.
Adjust the white shading in the following manner after
turning OFF the DS. GAIN and releasing the LINE MIX
GAIN function.
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 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. If they differ, make the
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 F10.
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
F10.
z Be absolutely sure to leave the electronic shutter at
OFF.
8 1 Set the WHITE BAL selector switch to “A” or “B,”
and use the AUTO W/B BAL switch to adjust the
white balance automatically (AWB).
2 Use the AUTO W/B BAL switch to adjust the black
balance automatically (ABB).
3 Again, 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.
11
When the lens has an extender or ratio converter,
repeat steps
7 - 9 to enable the extender or ratio
converter function. The camera-recorder stores, as
one lens file data item, three different correction
values for the following: a lens with an extender, a
lens with a ratio converter, and a lens with neither of
them.
Adjusting the Lens White Shading
#
< VF DISPLAY >
DISP CONDITION :NORMAL
DISP MODE :3
VF OUT :Y
VF DTL :3
ZEBRA1 DETECT :070%
ZEBRA2 DETECT :085%
ZEBRA2 :SPOT
LOW LIGHT LVL :35%
RC MENU DISP. :OFF
50M INDICATOR. :OFF
MARKER/CHAR LVL :50%
< 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-HPX2000P(VQT1D27-1)E.book 102 ページ ２００７年７月３０日 月曜日 午後１時３１分