Originally posted by MossyRocks An extra 1.5 stops less noise than a K-1ii would be a massive improvement over the K-3 and K-3ii I am running with my long glass.
Don't get your expectations too high up. I predict that most of that gain will be due to in-camera denoising, i.e., it won't present a real advantage (other than saving you to do the denoising in post-processing).
The K-1 II has a ~1.2 stop advantage over any APS-C camera with the same sensor performance (due to the larger sensor, provided in a comparison the same f-stop is used, resulting in less DOF for the K-1 II compared to the K-3 III).
The K-3 III apparently uses a BSI sensor which gives it a half- to one stop advantage over a camera with a regular sensor.
I think we can safely assume that the sensor technology in the K-3 III will not be significantly be better compared to the K-1 II sensor (beyond the BSI advantage), so that leaves us still with a slight advantage for the K-1 II.
If the K-3 III now is still ahead with "1.5 stops less noise" then that means that all this gain just comes from in-camera post-processing.
This is not to throw shade on the K-3 III, the latter will be an awesome camera, I'm just trying to not let expectation run wild. I'm sure after a while, we'll get some hard data about the sensor used in the K-3 III and then we'll definitely know for sure how much of the "noise advantage" is due to hardware and how much is due to "image processing" (which has been publicly announced for the K-3 III and which the Pentax engineers are very proud of).