Avision AD250F - Manual (Page 67)

User’s Manual
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7. Move your cursor over the preview image. Your mouse
cursor now becomes an Eyedropper.
8. Click to select a color which you wish to remove.
9. Click and hold your mouse button to view the result
after removing the specified color. If the result is
satisfactory, click [OK] to close the Preview window.
The Preview Window The Color dropout result