I took a test roll on Fujichrome 100. 150mm Zeiss Sonnar. Shot at all apertures f/4 to f/16, Hassie on tripod. Downtown cityscape. Traffic light was rendered small in the upper left corner. At every aperture from f/4 to f/16, with a 12-power magnifier, I can read "General Signal Corp." on the traffic light. This is no soft lens.(posted 8588 days ago)Regards,