Minolta DIMAGE SCAN DUAL II AF-2820U User Manual download pdf (Page 67)

Dimâge Scan Dual II 67

TONE CURVES/HISTOGRAM

Changing the shape of a correction curve changes the output

level for each corresponding input level. Changing the shape of

the red, green, or blue curves affects color balance of the

image. Changes to the RGB curve affect the image contrast

and brightness.

1. Click on the arrow next to the channel selection

list to display the available channel (R, G, B,

RGB).

2. Select the channel of the color to be corrected.

3. Click and drag the portion of the curve to be

changed.

• The coordinate value of the cursor is displayed from 0 to

255.

• The corrected image by changing the tone curves is

applied to the prescan image.

• You can also change the tone curves by freehand.

Correcting the Tone Curves

This function allows you to draw tone curves by freehand.

Changing Tone Curves by Freehand

1. Select the channel of the color (R, G, B, RGB) to

be corrected from the channel selection menu.

2. Click on .

• The cursor changes to the pencil shape.

3. Draw the desired curve by dragging.

• To smooth out the curve points, click on .

• The change will be reflected in the prescan image.

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Minolta DIMAGE SCAN DUAL II AF-2820U User Manual Page 67