Hello there. Do you have any practical experience with color films (dia) shot with this lens. I have to travel with my BUSCH 4x5 and this lens it's really small and could be my only lens. I also have sinaron 150, but the camera will not be so compact. I tested the Steinheil Munchen Culminar 135 with BW and had good results (not as contrasty as the sinaron...). Thanks