Originally posted by stevebrot I hope you did not spend too much money
This is not normal behavior and the symptoms are typical of a lens that has been dropped or suffered some other form of physical abuse.
Steve
Steve, I spent a little under $100USD. I was so giddy about how no one in the tent was remotely interested in Pentax, so that it gave me freedom of be the sole Pentaxian raiding goodies for myself.
I ended up forcing it to go over 100MM and hoped I wouldn't break it. It's not zooming out somewhat properly and still focusing right (I think..). However, after another close look, I've noticed a lot of scratch marks on the plastic shroud around the rear elements. Kind of feel very iffy about it and I am starting to lean on your take of physical abuse.