Peter asked: "I was thinking about A 70-210/4... Is it really that good?"
Yes, Peter, it is that good. Pentax made three or four manual-focus zooms whose results are, in every respect, indistinguishable from a great prime. The 70-210/4 is one of them.
I am not quite agree. While the SMC PENTAX-A 70-210/4 is a great zoom, it does not match the sharpness of the M135/3.5, especially wide open. I would suggest tp avoid f4 whenever possible, especially for scenery.
Alan Chan http://www.pbase.com/wlachan
