Report inappropriate content
Glass marble lens in Micro Four Thirds mount
Building the lens is easy: Just glue thelower two pieces together, then insert the tube with the marble. "Focusing" can be achieved by moving this tube back and forth.
The lower two pieces make also a perfectly fitting Micro Four Thirds bayonet mount in case you need one for other experiments.
The contrast of the sample photos is
enhanced in photoshop afterwards. Otherwise this is how they come out of the camera.