Hello, I tested the git (20120116) backend:
The y-range improved. No bump at the end anymore. However, I get a black horizontal stripe at the top (scan starts too early) and something is missing at the left-hand side (scan starts too late). The following settings are optimal (for my scanner) with the git-version. I don't know how much tolerances Canon builds in. SANE_FIX (2.2), /* Start of scan area in mm (x) */ SANE_FIX (9.0), /* Start of scan area in mm (y) */ SANE_FIX (216.7), /* Size of scan area in mm (x) */ SANE_FIX (299.0), /* Size of scan area in mm (y) */ The 2400 dpi resolution shows a vertical shift with respect to the lower resolutions: About 1 mm shifted (starts too late, ends too late). My other two issues (scanner not returning to start and A4 as default size in preview pane) are unchangend. Best regards, Peter
