<mime-type type="image/x-raw-olympus">
    <_comment>Olympus raw image</_comment>
    <magic priority="50">
      <match offset="0" type="string" value="\x49\x49\x52\x4F"/>
    </magic>
    <glob pattern="*.orf"/>
  </mime-type>

  <mime-type type="image/x-raw-pentax">
    <_comment>Pentax raw image</_comment>
    <glob pattern="*.ptx"/>
    <glob pattern="*.pef"/>
  </mime-type>