Unfortunately the lens is not good visible. the meter shows a speed of max. 8m/sec. For an image height of 18mm that means 444 frames/sec. Never seen such an item. Hope this helps J.
I have attached for information a pdf copy of a February 1938 Zeiss Ikon brochure (in German)?on the Registrier-Camera into the Files directory.? I am still not entirely clear what this instrument was for -?can any one in ZICG?elucidate?
Jochen Mabuse