What do folks here use for travel telephoto? I need something to go with a proposed travel kit of a7+ 24-70. I have the 55-210 which I'm not very fond of, and on my a7, it crops to 10MP, which is too low. I also have the 70-200/4 which I adore, but I'm looking for something light weight and travel. I'm thinking something to get me to good results at 200-300mm. Maybe 150 if I have to, and then crop a bit. Legacy or native is OK, but two limits: 1) light and small 2) affordable MF might be OK. Legacy might be OK, but I don't want a lens that you have to stop down to f5.6+ just to get good results. I have an MD100/2.5 that is very useable 1 click down, but not long enough. I have FD and MD adapters and also Leica M adapter. Any thing come to mind?? 150mm would I think be the minimum???