This may seem like a strange one, but... would Image Stabilization (as
implemented, say, by Canon in their 17-85 EF-S) deal with the movement seen
when your heart is beating very noticeably?
I ask this because I bring cameras with me on bike rides, and will often
have been riding up a very steep hill at very high effort, and if the moment
strikes to take a picture, my heart will not have had enough time to settle
back into my chest and I can visibly feel (and see) the results when I'm
holding the camera.
--Mike-- Chain Reaction ...