Auto Exposure - Epson Expression 1680 Reference Manual

Auto Exposure

Click the
the entire image, or for areas surrounded by active or selected
marquees. This feature adjusts the Gamma, Highlight, and
Shadow settings automatically.
Note:
Select Continuous Auto Exposure on the Color menu of the
Configuration dialog box to set the Auto Exposure feature to work
whenever you click the Preview button, modify the size of the
previewed image with the zoom feature, make a marquee, or change
the size or location of a marquee. See "Color menu" on page 2-19
for more information.
The Auto Exposure feature is not available when the Pixel Depth is
set to Black & White and Auto Area Segmentation is not selected
in the Image Type dialog box.
The Auto Exposure feature overrides any Gamma, Highlight, or
Shadow settings made in the Image Controls dialog box. Be sure to
use Auto Exposure before making any of the these settings.
The Auto Exposure feature is automatically activated when
scanning without previewing.
Auto Exposure button to optimize the exposure for
Understanding EPSON TWAIN Pro Features
2-37