Summary: Used for family/hobby shots. It is an excellent lens. Given its price, it would be hard to beat the value. Images are sharp and colorful with my k100d. Only negative is zoom creep which is a small annoyance when you forget to lock it.
Summary: Purchased for my wife's K10. She had a similar lens (18-250)on a Minolta film camera and loved it. She was not satisfied with the range on the standard lens (18-55). She has been in heaven since receiving this lens. It takes great photos. Everything from hurricane Ike damage in my home to hummingbirds at the feeder. It has great range and is the best everyday lens available. It is a hard to find lens and somewhat expensive but oh so worth it.
Pros: Consistent Output, Durable, Sharp Focus, Strong Construction
Summary: The flexibility of this lens, from very wide angle to quite long telephoto is amazing. I love it. I used this lens almost constantly on my K20D after I first tried it out. The zoom is smooth and tight, the daylight shots are clear and bright (even at full 250mm) even on cloudy days, and f3.6 at 18mm seems to let in more light than f3.6 at 18mm on the kit 18-55. Focus is fast, and isn't terribly noisy.
Summary: I needed a lens for my K200D when I travel and can't carry my camera backpack. And the lens is just what I needed. Focal lenght ranging from wide to medium tele, it saves a lot of space (only 3,4" closed) and its easy to carry mounted on the camera (there is even the lock at the minimum length). And in a second it can extend to a APS-c equivalent 380mm+. Focuses quickly.
Pros: Consistent Output, Durable, Easily Interchangeable, Easy To Clean, Lightweight, Strong Construction
Summary: This lens is fantastic. It fits easily into any Pentax camera with no sweat. I tend to worry a little bit about forcing anything with delicate mechanisms. Once the lens is in, youre all set to go! You can take pictures of just about anything! The zoom works great and covers large distances very easily. Its capabilities are just as good as one of those massive zoom lenses, at a fraction of the price and weight.
Pros: Consistent Output, Durable, Lightweight, Rugged, Sharp Focus, Strong Construction