Thinking about paths I finally thought of educational trails (Lehrpfad in German literally translates to educational path) which are very common in Germany. I did a search on educational trails in Frankfurt and found an educational trail
of the faculty of geosciences/geography
at the University of Frankfurt/M.
As I followed the trail I did several sphericals. The one I finally chose for the event shows a lovely spot near the old village center of Niederursel
a district of Frankfurt/M.
The shooting was done with a 3.15 meter (appx. 10.33 ft) pole
to reach a more elevated viewpoint above the street. The pole was extended to its full length. The lens was mounted with a custom-made bracket, which allows me to mount the lens to turn around the no-parallax point of the lens.
As the lens is a fisheye lens, four pictures easily cover 360°. To be sure I took three exposures at each direction. The exposures were 2 f-stops apart. The best exposed set was chosen before stitching.