Hello all, I would like to add some longer lens to my small collection. The longest lens I have is my favorite M 135/3.5 - sharp and small. But I need some more. I could buy mint Sigma 135-400 quite cheap (<350$), but I can't test it before I get it. I am bit afraid of its weight - is anybody here using it? Any experiences? Good, bad? Would I go better with some Pentax zoom in that price range? I plan to use it only for outdoor photography on MZ-6 and *ist D. Thanks for any hints.. and sorry for my english.
Peter B.
