I can't keep this to myself. I have been presented with an opportunity to purchase some Leica bodies and glass at a good deal. The unfortunate thing is that I am going out of town for a week and won't pick it up now. It includes the Elmarit 28mm 2.8, Summicron 50mm 2 and a R4s and SL2. There are a couple threads in the showcase, but they are pretty old. Does anyone have any experience with R lenses?