Christian Ankerstjerne wrote: Christian Ankerstjerne summarized a few points about relevant copyright:
German (and some other countries, including for example Sweden) copyright law states that the copyright expires 50 years after the photograph was taken. See § 72 UrhG.
Correct, sadly you has overseen § 28 UrhG which says that the copyright holder can alienate his rights to his/her heir due to a testament. What doesn´t mean less as you can forget § 72 UrhG or one has to proof if this paragraph can not be executed in every single case.
Christian Ankerstjerne wrote: Copyright resides with the photographer, unless it's sold on, or it's work for hire.
Note that no one can or will sell the copyright even if he/she want do! You can only bequeath it (german law § 28UrhG , austrian law § 23 UrhG) What you sell is the right of exploitation.