Well thats being polite. I have a 3.5/60mm Distagon lens and I triggered closed the aperture blades by turning a grub screw on the rear of the lens. Very stupid. But I was trying to discover why the lens would not focus to infinity. That's another problem. Anyway, I'm hoping someone on the forum might be a good deal smarter than me and explain how to reverse my misdead. Let me know if you need more details. Thanks in advance.