Hi -
I know there have been some discussions about the K5 freezing. Some have returned the camera, others have seen the issue disappear after a while.
Here's what's happening with mine. My understanding that most of the reports of freezing have occurred while shooting in AF-C. Mine has occurred in AF-S, while shooting relatively rapidly (although not more than say 2FPS).
I start getting blue and other color lines both vertically and horizontally. If I notice it immediately, I stop shooting, and after a few seconds, it seems to correct itself. But if I'm not chimping and keep shooting, not realizing there's an issue, the camera freezes. Power off, doesn't matter. I have to remove the battery and restart, which then resolves the issue.
I'm attaching a sample image. Is this what's considered "sensor stain"? If so, with body still under warranty, should I return for service? I purchased directly from Pentax.
I should also note that in both instances where this happened, it was in cold (15-30F degrees) outdoor temps, with rain/mist.
Thanks,
Jay