Document Source - Epson PERFECTION 1640 SU Reference Manual

❏ Exposure, Gamma, Highlight, Shadow, and Threshold in the
Image Controls dialog box
❏ Tone Correction in the Tone Correction dialog box
❏ Gray Balance Intensity, and Saturation in the Color
Adjustment dialog box
❏ Auto Exposure
Note:
Although the image in the Preview window changes as you make
settings, the settings do not affect the actual image until you scan, or re-
scan, the image.

Document Source

When using the document table on the scanner, leave the
Document Source set to Flatbed. Other selections are available
depending on what is installed. These are the optional Auto
Document Feeder, and TPU for Neg. Film or TPU for Pos. Film
(for the Film Adapter, optional with the Perfection 1640SU and
Perfection 1640SU Office, and included with the Perfection
1640SU Photo).
Note:
Uninstalled options are not displayed.
Flatbed:
Choose this setting to use the document table of the scanner.
3-6
Understanding EPSON TWAIN Features