The 105mm f/2.5 has a stellar reputation and deservedly so but I feel the 135mm/13.5cm f/3.5 deserve mention in the same breath. I am yet to take a picture with the f/3.5s that I didn't like. I can't say the same about my copy of the 135mm f/2.8 AIS which is just crazy considering it's the same focal length and newer.
