Quote: Terje-L My understanding is that the same SR mechanism is built into all the newer Pentax cameras (K100D up to K20D and K-m). So there should not be any difference in the SR effect between these cameras.
While researching the K20 last year, I found several reviews which claimed the Image Stabilization in the K20 is better than that in the K10. Below,
in blue is an excerpt of a discussion from Popular Photography last year. You can access the entire review here:
Camera Test: Pentax K20D - - PopPhotoMarch 2008
You will find similar claims if you read the K20 reviews by other reviewers.
"
According to Pentax, the K20D has a sensor-shift mechanism similar to the K10D's, and offers up to 4 stops' advantage. But our tests confirmed that minor modifications and faster processors have improved the image-stabilization system by about half a stop over the K10D. Now, when shooting with a 200mm lens, you can expect a 2.5-3 stop advantage in shutter speeds compared to handholding the camera without image stabilization. With wider-angle lenses, the benefit decreases, and with longer focal lengths (or heavier lenses) the benefit may increase."