Summary: This lens is very flexible, high quality, and very reasonably priced. Focus is perfectly sharp with no image artifacts. The only thing that bothers me about all of the K-DA series is the lack of an aperture ring, but I am slightly old fashioned.
Summary: which was A Good Thing. The listing said DA-L (which is the cheaper, plastic mount unit) but what I received was the standard DA (metal mount). Needless to say, I wasn't upset. So far, so good as far as the actual product goes - it's a kit lens quite suitable for general shooting of pictures. It's no Limited prime, nor does it profess to be.
Summary: I found one of these on the used market for only $23. It's one of the white colored ones, and is in brand new condition. My copy is actually sufficiently sharp for most needs even near the 18mm and 55mm ends with the aperture wide open. Either I got really lucky, or people are criticizing it a little harshly for being a kit lens? Comparing this 18-55mm to the Sony 18-55 I used to own ... it's clearly evident that Pentax makes a better kit lens.
Summary: I tried this lens out last week and loved it. It gives me the focal length and depth that I was searching for at a reasonable price. I could have used an adapter but I much preferred a complete lens to achieve the effects I was searching for. Now my Pentax lens set is complete.
Summary: The sharpness of the lens is very good. I've compared it to other more expensive prime lenses and it just as good as those lenses. The build quality is plastic, making it lighter. It does tend to hunt a little in low light, however, once locked in the lens delivers. Very good lens for the price.