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69
Click on the gray-point button (a) to calibrate the white balance to a point within the
image; the cursor will change to the gray-point dropper tool. When the dropper is placed
in the image area, the RGB values of that point are displayed at the top of the window
(b). Click on a neutral point within the image to make the calibration (c). The point chosen
can be at any brightness level, but it must have no definite color. Although the filter and
saturation setting in the dialog box will not affect the calibration, the sliders should be set
to zero so that the results can be judged.
A Minolta color meter can be used to measure the approximate color temperature of a
scene when the RAW image is captured. The recorded color temperature and CC index
value from the meter can be entered in the text boxes to set the white balance. A green
CC value should be entered as a negative integer and a magenta value as a positive
integer. When making the reading, both the the color temperature and the CC value must
be recorded. See page 90 for information on color measurement.
If the camera’s filter, saturation, contrast, or sharpness controls were used when the
picture was taken, the settings will be displayed in the dialog box. Changes to these
settings are reflected in the preview image. The cursor can be used to measure the RGB
values of any point within the image. When a Vivid color image is opened, the saturation
level will be set to zero (0), but the high saturation level of the color mode will be applied
to the image. If color matching is on (p. 82), except when using the original color space,
any changes to the contrast will not be applied when the file is opened.
The image brightness can be adjust by ±2.0Ev with the exposure-compensation slider.
The slider will not reflect the degree of exposure compensation used when the image was
captured. Like the brightness control in the brightness, contrast, and color-balance
palette, detail can be lost in the highlights and shadows. To preserve these details, it is
recommended to open the image without compensating the exposure and adjust the
image brightness with the tone-curve / histogram palette (p. 47).
The reset button returns all setting to their initial position. The close button cancels any
settings made and closes the window without processing the RAW image. To apply the
settings to the image data and open the file, click the OK button.
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