Originally posted by awscreo Was the NR on or off? I personally see no white dots with any settings with NR on Auto (basically the dark frame applied), but it doubles my exposure times...................
When I did it for my previous post, my K-1 was in AUTO for long exposure noise reduction (and yes, it doubles the exposure time to 1 minute). I just repeated the process at 128000 ISO and long exposure noise reduction off, and still no specks. With AUTO, there may have been some additional noise reduction, but with the LCD image, it wasn't obvious. This is the first low light photography I've done with the K-1 and it's pretty impressive. I can barely see the wall (by eye) which I used as a test shot, but the 30 second f5.6 exposure brings out all the colors and is reasonably sharp and well exposed. In any case, I really thought I'd see more noise than I did. but to answer your question, no, I didn't see any white spots either way.
Addenda: I got to thinking about what you said and went back to a white/black target for testing. With 12800 ISO I did see 2 white pixels in the black target but they are pixel events and could be easily retouched. I then reshot with 51200 ISO at f11 (30s), thinking I would see all kinds of noise, but still only the 2 white pixels and a relatively quiet reproduction of the black area (noise reduction turned OFF in both instances). I'm even more impressed.