Site for a german photographer.
Processwire makes it easy to manage categories, photosets and images.
http://fredericstreicher.com/
Edit:
Let me add a few details regarding the use of PW:
I use the thumbnail module (by apeisa) to allow custom thumbnails for the list view. A very useful module, easy to use for the client.
For the backend I chose the ergo admin theme and modified it slightly: e.g. removed the sidebar, which I don't need.
Oh, and make sure to view the site on your tablet as you can swipe through detail views.
Cheers
Claude