Originally posted by illdefined I think the lens information only stiffens or loosens the 'brakes'. SR is reactive, not predictive. it doesn't initiate movement in anticipation of shake, it resists movement when it detects it.
You have an incorrect idea about the algorithm behind the SR system. This isn't probably the thread to dig into this too deep.
In summary, imagine that the SR system observes rotation about two body axes and does a frequency analysis of them. Then, for each frequency, it detects its phase and amplitude, subtracts the latency of the SR mechanism from the phase, and retransforms the result into real space. It then multiplies the result by focal length and steers the magnets accordingly.
If you are lost by now (the anticipated effect of my explainations
), then you may just want to remember this:
It
does anticipate movements. And there are no brakes