White shading compensation

Three optionally adjustable data items ([L1:LENS1], [L2:LENS2], and [L3:LENS3]) can be used for white shading compensation with the camera. Shading compensation is not performed when set to [OFF].

Selecting white shading data

Select [L1:LENS1], [L2:LENS2], [L3:LENS3], or [OFF] using main menu → [MAINTENANCE] → [WHITE SHADING] → [SHADING SELECT].

With factory settings, no compensation data is stored in [L1:LENS1], [L2:LENS2], and [L3:LENS3].

The title of the white shading data can be changed using the setting menu. (Changing the white shading data title)

Adjusting the white shading

co_osd_whiteshading

Set the camera for adjustment.

Mount the lens on the camera.

  • Make sure to connect the lens cable.

Set the <SHUTTER> switch to <OFF>, and the <GAIN> switch to <L> (0 dB).

If the lens is equipped with an extender function, release the extender function.

Make sure it is set to either [L1:LENS1], [L2:LENS2], or [L3:LENS3] using main menu → [MAINTENANCE] → [WHITE SHADING] → [SHADING SELECT].

Select [EXECUTE] using main menu → [MAINTENANCE] → [WHITE SHADING].

  • The [CHECK LUMINANCE LEVEL. ZEBRA ON EVF.] message is displayed on the screen. (Fig. 1)

Set the screen.

Shoot a white sheet of paper with no unevenness of color for the whole screen.

Set the lens aperture to manual, and adjust it so that the zebra pattern covers the whole viewfinder screen.

  • Make sure that the lens aperture control is between F4 to F11.

  • Adjust the position of the lighting because the zebra pattern will not cover the whole screen if there is any unevenness in the lighting.

  • Make adjustments to avoid several light sources of different color temperature (e.g. fluorescent lights and halogen lamp) from illuminating on the white paper.

Adjust the white balance/black balance.

Set the <WHITE BAL> switch to <A> or <B>, and use the <AUTO W/B BAL> switch to adjust white balance automatically (AWB).

Use the <AUTO W/B BAL> switch to adjust black balance automatically (ABB).

Use the <AUTO W/B BAL> switch to adjust white balance automatically (AWB) again.

Repeat steps 2-2.

Adjust white shading.

Select [YES] and press the jog dial button.

  • The [ACTIVE...] message is displayed on the screen during the adjustment.

  • When the adjustment is complete after a few seconds, the [WHITE SHADING OK!] message is displayed.

  • If an error message such as [WHITE SHADING ERROR!], [LEVEL OVER], [WHITE SHADING ERROR!], or [LOW LIGHT] appears, readjust the iris.

  • The adjusted value is automatically stored in the selected memory ([L1:LENS1], [L2:LENS2], or [L3:LENS3]).

If the lens is equipped with an extender function, enable the extender function and repeat steps 2 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.

Changing the white shading data title

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).

In the main menu → [MAINTENANCE] → [WHITE SHADING] →, select [NAME EDIT].

The title entry screen and keyboard are displayed.

Enter the characters you want to set on the keyboard using cursor buttons (or the jog dial button).

Select [OK] and press the <SET> button (or the jog dial button).

The title is updated.