my 28-70 2.8 ex is giving me the pip.........I cant get it to focus properly at the 28mm, 34 or even 50mm.......70mm seems ok........it worked fine on my Pentax KM but not on my K5.......so has anybody dealt with Kennedy's over an issue like this. This is a replacement lens.......( replacing one that didnt work ) purchased originally 09/08/2010......at Camera house in Melbourne
cheers
Jan