A bit of a theoretical question, rather than truly tech support... but figured this was the best place for it. I was thinking about whether there's some way of calculating minimum shutter speed for a moving camera or a moving object (or some combination of the two, obviously). When talking about depth-of-field, the circle of confusion (CoC) is used to quantify pixels in the image which are 'acceptably sharp'.
Is there any equivalent concept for motion blur -- i.e., how many pixels an object can move in-frame and still be considered 'frozen' or 'sharp'? It seems like the CoC measure should apply equally (i.e., CoC tells us what the maximum blurriness of a spot on the image that is still perceived as sharp), since we're still talking about blur, just from a different source (motion vs. aperture). Does it make sense to apply the same concept to motion blur, or am I way off base?