All of the photos posted in this thread are hand held.
There is no focusing ring on the Heligon so I use my neck muscles for focusing
The extension ring used is a PN-11. Focusing distance is about 30 cm.
It's amazing how limitations improve ones photography...
Even if you don't have a limited lens like a Heligon, just try it out, fixed focal length, fixed aperture (any 1.4 or 1.8 lens would do), and a fixed focus distance.
Then you really start to think and pre-visualize the image before looking through the viewfinder