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Chapter 3 Preparation — Mounting and adjusting the lens
6
If the lens is equipped with an extender function, enable the extender function and repeat steps
to 5.
Adjusted values are stored on the camera as a single lens correction data including two ways for when the lens is equipped and not equipped with a
lens extender.
Adjustment values are saved in memory, so there is no need to re-adjust white shading even after turning the camera off.
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NOTE
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Coloring may occur in the vertical direction near where the lens aperture is open (OPEN) even when the white shading has been adjusted, but this is
something that is inherent to optical systems. This is not a malfunction.
t
When white shading adjustment is performed while image is being disturbed due to the genlock, adjustment may not be performed correctly. Try white
shading adjustment again after the image returns to normal.
t
Since fluorescent lights, mercury lamps, and other such kinds of lighting tend to flicker, use a light source which is less subject to flickering such as
sunlight or a halogen lamp.
t
Make sure to leave the <SHUTTER> switch at <OFF>.
Changing the white shading data title
1
Select the white shading data which title you want to change in the main menu
→
[MAINTENANCE]
→
[WHITE SHADING]
→
[SHADING SELECT], and press the <SET> button (or the jog dial button).
2
In the main menu
→
[MAINTENANCE]
→
[WHITE SHADING]
→
, select [NAME EDIT].
The title entry screen and keyboard are displayed.
3
Enter the characters you want to set on the keyboard using cursor buttons (or the jog dial button).
4
Select [OK] and press the <SET> button (or the jog dial button).
The title is updated.
Chromatic aberration compensation function (CAC)
The chromatic aberration compensation function minimizes color smearing in peripheral images. This function automatically compensates for
registration error that is caused mainly due to slight chromatic aberration, which is hard to completely compensate with the lens itself, using the camera
recorder unit.
When the lens compatible with the chromatic aberration compensation function is mounted, if the camera has the chromatic aberration compensation
data of the lens, then the chromatic aberration compensation function is activated automatically.
What is lens chromatic aberration?
B
G
R
“Chromatic aberration” here refers to zoom factor chromatic aberration. Zoom factor chromatic aberration occurs since the diffraction ratio of a lens
differs according to red (R)/green (G)/blue (B). Chromatic aberration on the lens itself is compensated for, but still remains in the periphery, in particular.
Also, this chromatic aberration occurs on zoom lens due to a complex relationship between zoom ratio, iris and focal distance. In image terms, this is
registration error.
Chromatic aberration compensation function
To compensate chromatic aberration, store the chromatic aberration characteristics of the lens regarding zoom ratio, iris and focal distance to the
camera recorder beforehand. Connect a lens that matches those chromatic aberration characteristics, and perform compensation matched to the zoom
ratio, iris and focal distance of that lens.
The following type of chromatic aberration compensation function data for lenses is stored in the camera before it is shipped.
Display on the camera
Corresponding lens parts number
XA16x 8A-XB4
XA16x 8A-XB4
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NOTE
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For details on additions and modifications to lenses compatible with the chromatic aberration compensation function, visit the support desk at the
following website:
http://pro-av.panasonic.net/
