https://bugs.kde.org/show_bug.cgi?id=431782

            Bug ID: 431782
           Summary: Incorrect resolution detected for HP Scanjet 3400C
           Product: Skanlite
           Version: 2.2.0
          Platform: Neon Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

SUMMARY

Skanlite will report an incorrect maximum resolution for the scanner (which is
an HP ScanJet 3400C): 220 x 296 mm instead of 216 x 297 as stated in the HP
support page: https://support.hp.com/us-en/document/bus03735/

The annoyance is that it defaults to "Custom" resolution because A4 is 210 x
297, so Skanlite thinks that this scanner is not able to scan an A4 document,
which in reality is able to.

Maybe is a conversion error from pixel and ppi to mm?

STEPS TO REPRODUCE
1. Starts skanlite
2. read the "Height" box
3. 

OBSERVED RESULT
It says 296 as maximum resolution

EXPECTED RESULT
It should says 297

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE Neon 20.04, all updated
(available in About System)
KDE Plasma Version: 5.20.5
KDE Frameworks Version: 5.78.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION

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