I have a Canon LiDE 700F scanner. When scanning with IrfanView, I can choose between two TWAIN sources, one using the same plain interface as in PDF Tools ("Scan to PDF"), and another much fancier UI.
In PDF Tools, I can select between two scanners, "Standard (WIA CanoScan LiDE 700F)" and "WIA CanoScan LiDE 700F". However, in both cases, I will see the same plain UI (see Clipboard02.png attachment at the bottom).
In IrfanView, I can choose between the two drivers, "WIA-WIA CanoScan LiDE 700F 1.0 (32-32)", which yields the same UI as before, and "CanoScan LiDE 700F 14.0 (32-32)", which gives me a much better UI (see Clipboard03.jpg attachment at the top).
This interface allows a much better work flow. In particular, it allows me to select a page area (such as A5) and then to batch-scan multiple pages with this setting. With the plain UI, I have to preview and crop each page individually.
Is it possible to enable this other UI in the Scan to PDF function, too? That would make some of my scan jobs much easier! At the moment, I sometimes resort to scanning images with IrfanView and only then switching to PDF Tools.
Is there anything I can do to help debug why this TWAIN source is not showing up in PDF Tools?