I'm just curious how many people have sold photographic gear they later wished they hadn't. I once owned a Zeiss 34-70 f/3.4 zoom back in the eighties for a Contax camera I had. The camera company went bust so I changed back to Nikon. In any event I sold off the Zeiss, and have regretted it ever since. It probably could have been adapted to What I have now. To this day I miss the look that lens gave to scenes, and how different the lens coating colors were when I looked down into the barrel under a light. Any similar regrets from some of you?