Chapter 4 Adjustments and settings for recording (continued)

4-10-7 Lens file

The built-in memory of the unit stores eight sets of lens files. On the SD memory card, eight titles for eight sets of lens files in a table (total 64 sets) can be written.

The following data are recorded on the lens file. O Title name

O White shading correction value O Flare compensation value

O RB gain offset correction value

4-10-8 How to provide lens files

Adjustment of white shading

For the white shading adjustment, refer to “5-3 Adjusting the white shading of the lens.”

Adjustment of the flare

Using the menu operations, open the <LENS FILE ADJ> screen from the MAINTENANCE page and adjust the flare in the LENS R FLARE item, the LENS G FLARE item and the LENS B FLARE item.

#< LENS FILE ADJ >

RB GAIN CTRL RESET:ON

LENS R GAIN OFFSET:+000

LENS B GAIN OFFSET:+000

LENS R FLARE

:000

LENS G FLARE

:000

LENS B FLARE

:000

Example of the chart for flare adjustment

0.1H

0.1L

Adjustment of gain offset

For correcting changes in white balance that may occur when replacing the lens.

1 Mount the lens as standard on the unit.

2 Shoot the grayscale chart with appropriate lighting (2000 lx, 3200 K are preferable).

3 Set the WHITE BAL switch to the “A” position.

4 Adjust the lens aperture so that the white window at the center of the grayscale chart is about 80%.

5 Push the AUTO W/B BAL switch to “AWB” to adjust the white balance automatically.

6 Measure the signal level of RGB by using the waveform monitor (WFM).

7 Replace the lens to one where a lens file is provided.

8 Adjust the lens aperture so that the signal level of Gch is

the same signal level as the one obtained in 6 above.

9 Using the menu operations, open the <LENS FILE ADJ> screen from the MAINTENANCE page and set the RB GAIN CTRL RESET to ON.

10 Adjust the signal level of Rch to be the same as Gch in the LENS R OFFSET item.

11 In the same way, adjust the signal level of Bch to be the same as Gch in the LENS B OFFSET item.

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