I would like to have had the F* version because of the foot, but hard to find. Same optics, so I wound up these last 10 years with the FA* in perfect condition- left over stock, display-case model, from a small dealer going into retirement. He sold the usual brands, and included Pentax. I am delighted with this lens! I am interested in the aftermarket tripod foot.
For some unknowable reason, Pentax discontinued this lens, which was made for film cameras, after they began making DSLR cameras and discontinued film bodies, but did not replace it with the DA* 300mm until years later!
Very sharp, and as already said, AF is amazingly fast and accurate. Quick-Shift MF touchup is totally unneeded, because you can instantly switch back and forth from AF to MF just by pulling backward or forward on the focusing collar where you hold the lens! MF operation on my model is excellent.
Last edited by mikesbike; 09-05-2017 at 07:16 PM.