This lens is the amateur photographer’s dream come true. Wide enough for all but the closest macro shots and still with enough zoom for just about everything else. This is one stop shopping. If I am [ad#reviews-image-only] close enough to an animal to see it, I am close enough for a close up. The range is such that this is the only lens I need – ever – so less to carry. Since I’m not switching lenses I don’t have to worry about dirt in the body either. It does have a hefty weight to it but considering that it is 2 or 3 lenses in one, and I don’t have to carry anything else, its more than light enough. Lens creep is the biggest problem I can think of with this lens but after a few weeks of use I quickly learned to deal with it without thinking.
The only negative I can think of with this lens is that Pentax does not offer a DA* version but only a DA version.