Epson Expression 800 User Manual - TWAIN 32 - Page 45

To remove any dominating color casts while automatically optimizing your image, click the Auto Adjust button. To activate Auto Adjust without correcting an image's color cast, hold down the Shift key and click the Auto Adjust button. The densitometer is informational only. You cannot change values from the densitometer. Using the Densitometer The densitometer reports the density of the colors in an image -how many pixels of each color are in a given sample area. Densitometer readings are useful when you adjust contrast, change the tone curve, and balance the color. You can also mark a specific measuring point for the densitometer; for details, see Setting the Densitometer Measuring Point. The top row of the densitometer shows the color values of the image at the exact spot where you've positioned the mouse pointer in the prescan image. As you move the mouse pointer to different positions, you'll see the values change. The values in the lower row show the values that result from any changes you make. shows pixel density and color saturation before and after image adjustments color channels values before adjustment values after adjustment Adjusting Image Quality Page 45