White shading adjustment

White shading adjustment is recommended after replacing the lens. The adjustment relates to the camera vertical coloration. If the lens includes an extender, the shading can be optimized for both extender on and off modes.

(Vertical coloration refers to an effect whereby the image of an overall white sheet of paper tends toward green at the top and magenta at the bottom, or vice versa.)

Adjustment steps

1.Install the lens on the camera (be sure to connect the lens cable).

2.Set the electronic shutter to off and the gain to L (0 dB).

3.If provided, set the lens extender to off.

4.Notice that flicker can occur with fluorescent or mercury lighting. Therefore, use sunlight or halogen as the light source.

In the auto iris mode, check that the iris is between F4 and F11. If necessary, adjust the light source position (be sure the electronic shutter is off).

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Hitachi V-21W operating instructions White shading adjustment, Adjustment steps