A SERVICE OF

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WIA has its own user interface. It is relatively simple and does not contain the wide range of image-
quality options that are available in the TWAIN driver user interface.
When you use the WIA scan driver, you must modify the brightness and contrast after you perform the
scan. Contrast or brightness modifications cannot be set on the device. Only native device resolutions
are supported and software interpolation is not performed. The WIA scan driver supports these scan
types:ADF or Flatbed, but It does not support duplex scanning. The WIA scan driver supports the
following compression types:
None
.JPG
.GIF
.TIFF
44 Chapter 2 Software overview for Windows ENWW
Software overview for
Windows