9 out of 10 points and recommendedsharp, no vignetting at all, full frame, light, no visible distortion, fantastic coloursfilmsy build quality.
This lens is truly spectacular! I read the first review and I think the author has some f/b focus issues on his K10, the lens hasn't any distortion or vignetting, either wide open. Is light and fast and accurate on focussing. Photos taken with this lens are indistinguible from the ones I take with the 16-45mm. And it is light! Less than 200gr. Ok, this is a filmsy lens but who cares? If for an hand of bucks you got a lens that matches the 16-45 and is extremely sharp from corner to corner, from the first stops. And best of all when you mount it on a MZ camera you got an outstanding 18mm nearly whitout geometric distortion. I think that Pentax stopped to produce this beauty becouse they are afraid by its concurrency against the old 20-35 and the new 16-45... Look at the magazines no one has put on their pages a test of this beauty, I suspect Pentax has never send a copy of this to the magazine, But they decide to boundle it in the *ist project, and we know how much pentax has worked on the *istD. If this lens has been prouposed at the Pentax ist launch in a boundle at near 2000$ surely it an't be a bottle of coke.reviewed July 15th, 2008 (purchased for $150)
PS If you consider the price/quality ratio this lens is a 10
9 out of 10 points and recommendedsharper and widerthe new Sigma and Tamron @2.8
This lens is fantastic, it is the "must have lens" on the K10 and the k20. Really spectacular. I think the only reasonable alternatives are the new tamron and Sigma but they lacks in colour and aren't 16mm!reviewed July 15th, 2008 (purchased for $300)