A top superzoom

The lens I bought together with the new K5. The immediate resale of the lens I had already factored if not satisfied, therefore test pictures were taken as the first time a lot of, not in the wild, but on a stand out of the window and compared with the kit lens 18-55 and the Sigma 10 20 / 3.5 (comparisons are of course only natural only with overlapping focal lengths possible).
So you see, this test has been some substance, there is of course no measurement, the images are compared by me directly on a screen, and that the RAW files with Lightroom.
First: The Sigma (also brand new) I have returned immediately because of the full aperture performance after the test, which I mention no longer following
Was tested at 18, 55 and (of course without comparison) at 135 mm, each with an open aperture and Bl.. 8
Here the further results:
18mm, open: the small kit lens is much sharper than the high in the middle, but falls off sharply towards the edge, the 18-135 will remain here even (shock!). Overall, the 18-135 is here but disappointingly weak. Dimmed: Here the world is fine, 18-135 is wonderfully sharp in the middle, fält little towards the edge and hitting the small kit significantly.
55mm: The 18-135 is open not supergut but usable, dims continuously super knackscharf and suggests that small in all respects clearly.
135mm: As with Super zoom "usual" lower sharpness, open at the edge somewhat blurred, dimmed very tidy, though the sharpness of the intermediate focal length is not reached. Magenta / cyanfarbsäume are on the edge now clear, but can be corrected well with Lightroom. The K-5 can, by the way directly.
Other: The scattered light sensitivity I am very satisfied. The lens fits in wonderfully handling for K-fifth For Lens Hood: Yeah, I know, you've let your lens hoods all because the use is at home too cumbersome in the drawer. The lens hood This lens I have always in with, namely Transport flipped on the lens. If it is to go fast with a snapshot that I do not use it too: The lens cap can still lose weight well and connect, and the zoom ring is easily accessible because of the tulip shape of the aperture.
Conclusion: A wonderful superzoom, can be compensated easily by stopping its full aperture weaknesses especially at 18mm. For owners of small Kitobjektives: An upgrade was definitely worth it, the image quality is better in almost all situations. A bad time problem with Pentax, the pricing policy, I will comment on elsewhere.
Why do I, despite some weaknesses 5 star forgive: Because it is a superzoom and not "limited", it has fully met my expectations.
But apparently has to deal with production variations, as I gather from a review of the previous speaker also Pentax. In such a case I change the future to rigorously, so in the above mentioned Sigma. Scale for what you can expect, here are reviews. Too bad if the are not available for come onto the market lenses.