Epson Expression 800 User Manual - TWAIN 32 - Page 52

Using the Tone Curve Sliders The sliders at the bottom of the dialog box provide an easy way to adjust the tone curve. sliders numeric value fields Each slider has a value of 0 at the middle setting. Moving to the right increases the value; moving to the left gives a negative value (-1, -2, etc.). You can also adjust the value by typing in a positive or negative number in the numeric value field next to each slider. Adjust one or more of the following sliders: Contrast Brightness Controls the highlights and shadows of the tone curve without affecting the midtones. Adjusts the overall lightness or darkness of the image. Move the slider bar to the right to increase brightness or to the left to decrease brightness. Highlights Controls only the points on the right of the tone curve. Use this slider when you want to adjust highlights without affecting the shadows. Adjusting Image Quality Page 52