I am thinking about adding a Pentax DA 50-200mm lens to my gear. The reviews are good and the price is
quite good.
My specific question: It is said that the focus is somewhat soft at the
full telephoto end. I would expect that to be the case with most hobby-level lenses; but at what focal length do you think the sharpness of focus would become intolerable?? 175mm?, 180mm? more? less? Guesses?
Thanks
geo