Originally posted by Tony3d My k3-2 seems to be iffy at 1/60! I can get repeatability at 1/125! Am kinda surprised that 1/60 is hit or miss? What are you guys experiencing?
Your post is of interest since SR can really help getting the best out of the K-3 / K-3II sensor, by allowing the use of a lower ISO and/or smaller lens aperture setting. SR has a sweet spot in terms of effectiveness versus shutter speed regardless of the focal length. By design, it is related to the bandwidth of the in camera accelerometer and sensor position actuation servo loop that acts as a bandpass filter for camera body displacement, it can compensate very well for a certain frequency of camera movement, while is does not compensate slow camera motion or very fast camera motion. Shutter speed during which there's not record-able motion is related to the center frequency of the SR servo. The SR sevo loop gain / phase changes with the lens FL (that's why you have to enter a FL number when using SR with manual lenses), but that is limited due to stability issues. I guess 4 stops of SR is achievable at a certain range of focal lengths and shutter speed but then drops outside of this range. My experience with the DA300, at SR can roughly compensate for 1 stop (1/180), and 2 stops (1/90) is not repeatable.