I have to use the Canon 9000F scanner in a project. I am having some troubles with the TWAIN driver (see: Are memory issues common when scanning 2400 DPI pictures with TWAIN?), so I tried WIA as an alternative, but the built in scanning dialog only allows a maximum resolution of 600 DPI, but I know that at least 1200 DPI should be possible.
Is it possible to override these values? Where do the limitations come from? Is this caused by the driver or is this configured somewhere in WIA itself? If I went to down to a lower level and do all these scanning functions myself would I face the same limitations?
Question no longer relevant. Decided to use the TWAIN driver.