Epson Expression 1680 - Manual (Page 43)

Understanding EPSON TWAIN Pro Features 2-23
Densitometer menu
Click the Densitometer tab to display the Densitometer menu.
Sampling Area
This setting allows you to set the area in pixels that the
Densitometer samples. You can choose between
1 x 1 pixel ,
3 x 3 pixels , or 5 x 5 pixels .
Note:
You can change the sampling area while viewing the Densitometer
window by pressing your computer’s
Ctrl and E keys.