I found, that there the german word "Städte" (= cities) is translated in the url part "st-dte".
As you can see, the umlaut "ä" is completely lost. It should be "staedte" instead, because "ae" is normally the url-forum of "ä". As for example "ue" is the SEO
-URL translation of "ü", as used in vBseo
has also a section for user-defined character translation).
But what's about PhotoPost? Is there any feature for this?