I cannot completely resolve the problem. camera recognition As ART display RICOH as camera maker using exiv2, in the file slr-pentax.xml, replace Pentax by RICOH: <camera> <maker>RICOH</maker> <model>Pentax KP</model> <model lang="en">KP</model> <mount>Pentax KAF2</mount> <cropfactor>1.534</cropfactor> </camera> This modification should be propagated upst…