i am running 12.3 and have another canon printer.
encountered similar. I installed libtiff3 then. i have now both libtiff3 and libtiff5. not causing me any problems.
in my case, i also needed to install some libxml2* packages.
I thought the library was libtiff.so with the major release number after it. So. libtiff.so.3 was earlier than libtiff.so.5.
ANyhow, went into the yast software management and looked for libtiff3. Nothing. Added packman repo and tried again. Still nothing. Got libtiff5 but no libtiff3. Which repo should I get?
And yes. libtiff.so.3 (which is in the package “libtiff3”) is earlier than libtiff.so.5 from package “libtiff5”.
But your canon driver needs the earlier version.