Peire, you mentioned a while ago in another thread that “the 135/2 Apo Sonnar is optically the best out of 423 lenses I currently have”. When you say that the Jupiter 9 85/2 and Helios M44-2 58/2 had to wait more than 3 years for their turn, does that mean that you have a strict rotation whereby each time you go out to photograph you pick one (or two or three) lenses to work with in turn? Although that goes against the conventional “wisdom” that one should learn to use a single lens well, it strikes me that your method would provide a thorough education in which lens might be best suited for a particular task.