The FINEST Vintage Lenses Ever Made! Seven INCREDIBLE Carl Zeiss Jena Lenses - Tested! - YouTube
Vintage Lens: Carl Zeiss Jena DDR 135mm f3.5 — The Light Composer
Pre-Owned Contax RF Carl Zeiss Jena Sonnar 8.5cm 85mm f/2 T Lens, good optics, little catch in focussing but no effect on performance and sharpness of the lens. at Acephoto.net