Ethiopian people - the Omo Valley

Leaving Konso, there are at least 17 tribes in the Lower Omo Valley. The region is very touristic and the tribes are used to having tourists coming in their 4x4, taking pictures and paying 1-3 Birr per picture! We felt a little odd and reduced our photo taking. Paying for pictures is unusual and as can be seen on some pictures, the pictures look unnatural.
Nevertheless it was one of the nicest travel parts in Ethiopia.

paying for the picture: it's visible, no?