Hi Larry. Welcome aboard. I snipped your post a tad. Cannot speak for the Pentax version as i dont have one, yet, but i do a lot of equestrian work with my Nikon f2.8 and it works out very well.I;'d have to say atleast 97-98% usable,well focused shots from it. If i am following a Dressage rider around the ring,i keep it on AF-C and shoot at will.
I think for soccer you should find a huge difference from the mf lenses.You allready say you have mf f2.8 lenses so that should give you a good idea what you can get in low light. I do have some problems in ~really~ low light, but nothing that bothers me. Dave Brooks . Since all of my > lenses save one (16-45 DA) are MF I have no good way to judge whether > I would see a significant improvement focusing in the fast pace and > questionable night lighting found at high school soccer games. So what > is the opinion of people that have used both? Is it worth buying an AF > lens to get improved focusing? > Thanks, > > Larry Cook > www.cook-imaging.com <http://www.cook-imaging.com> > >