Telephotos.... All lenses wide open: All lenses at f8: The 150mm S-M-C Takumar has fungus in it (I couldn't open it to clean it!) so some of the haze will be to do with that. The Petri is the obvious winner here when you take into account the price - $4 on ebay.  Beyond that, the Pentax lenses are all in wonderful condition, and the Minoltas are seriously worn, the 135mm especially, but still deliver a lovely image.  I can't over-state how nice the Pentax lenses a