Exaggerated by about a half a zillion times?
The original Zeiss 40mm is about 2x larger - which was par for the course with early wide angle lenses.
The cost of the compact size is usually distortion, unfortunately I cannot find a spec sheet for the Schneider.
But distortion can now be minimized in software...
Unfortunately the current trend in digital for highly corrected lenses is that they have now grown more than 2x bigger than the classic high quality film era lenses.