sergysergy - I was going to pm you about this lens, but thought I'd better verify what I have in my collection and see if I 'need' this lens (um.. 'want' better word I guess). Seems I'd better pass on this fine lens. If I didn't already have 4 versions of Pentax mount 300 mm (including 2 different brands of f2.8), I would seriously consider it. But I guess I really don't need (or can justify) 5 - 300mm lenses? Or even more than one, to be truthful. That is, unless someone can convince me otherwise
Silly me, guess I need to start using the ones I have & see if I should start slimming my collection down.
Good luck!
(PS - I hope this post isn't outside any appropriate posting guidelines. I just thought some members would get a kick out of my 'dilemma'.)