Manual
Page 555
... Threshold Settings dialog box opens. When Color Mode is set of tone curve and threshold settings of the Color Adjustment Buttons. Adjusting Tone Curve (Final Review) Make a final check of tone input and output. By adjusting the threshold level, you can make in this screen. Select Add/Delete... Adjusting Histogram (Tone...
... Threshold Settings dialog box opens. When Color Mode is set of tone curve and threshold settings of the Color Adjustment Buttons. Adjusting Tone Curve (Final Review) Make a final check of tone input and output. By adjusting the threshold level, you can make in this screen. Select Add/Delete... Adjusting Histogram (Tone...