Kilfit mit unbekantem Anschluss zu M42 umbauen

[barney]

Interesting background blobs. You will notice the concentric rings caused by Kilfitts attempts to combat spheric aberrations by grinding two different radii .

p.

Btw - the last edition (serials 301-xxx, labeled "Zoomar Muenchen Zoomatar 2.8/90") don't feature these "double rings" anymore.