Originally posted by dgaies I had a small "string of pearls" sensor stain on a silver K-5 that I bought. It was smaller and less of an issue than the one I had on my initial K-5 (from the initial production run), but it was present nonetheless.
As I understand it from Pentax USA, they will fix the Stain issues should they arise in any of the K-5's, warranty or not. So I'm not too concerned about that. The camera is supposed to have around 300 clicks on it, so if I understand the stain issue it is possible for it to start appearing after a few thousand shots. I'll just keep an eye on it and see what happens.