(Histogram)A histogram allows you to see the data concentration at each brightness level of an image. You canspecify the brightest level (highlight) and darkest level (shadow) within an image, cut the levels andexpand the middle of the tonal range of the image.Adjusting Histogram(Tone Curve Settings)Adjust the brightness of an image by selecting the type of graph (tone curve) showing the balance oftone input and output. You can make fine adjustments to the brightness of a specific area.Adjusting Tone Curve(Final Review)Make a final check of color adjustments. The final synthesized tone curve and the histogram derivedfrom the subsequent image processing will be displayed. There are no settings to make in this screen.• For a color image, select a color in Channel to check either Red, Green, or Blue, or select Masterto check three colors together.• If you place the cursor on the preview image, the portion will be enlarged and its RGB values (onlyL when Color Mode is Grayscale) before and after the adjustments will be displayed.(Threshold)Set the boundary (threshold) at which black and white are divided. By adjusting the threshold level, youcan sharpen text in a document or reduce show-through in newspapers.Setting ThresholdCustomYou can name and save a set of tone curve and threshold settings of the Color Adjustment Buttons.Select Add/Delete... from the pull-down menu; when Color Mode is set to anything but Black andWhite, the Add/Delete Tone Curve Settings dialog box opens; when Color Mode is Black andWhite, the Add/Delete Threshold Settings dialog box opens.555
