What lens should I buy
So I have a nikon d3100 and i recently bought a 55 200mm lens for it with autofocus. I mainly do planespotting at airports but I now like also spotting high altitude ones from my backyard. I was thinking of buying a 600mm one. Doesn't really matter if its auto focus manual works too for me, And I have a tripod. I would like it preferably under 200 euros and max 300. Do you have any recommendations?