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Message: <blockquote data-quote="Stoshowicz" data-source="post: 369024" data-attributes="member: 31397">I was setting up a scenario that one could visualize that the distortion that occurs in the image, and how it affects the image,,It does happen you know, its an artifact of the relative speeds of the thing moving across the screen and the time that the shutters take to expose the screen. I did additional research over the weekend on this issue.The narrowness of the effective shutter opening does suppress the effect of subject motion, and so there is some effect on blur due to subject motion , but its not a direct calculation of half the time equals half the motion. The distortion due to the time delay of the shutter getting across the sensor, will still smudge or compress the data to some extent. This effect if it affects even ten pixels across the image still can affect the image. and so there is a limit of detail one can get when the subject is moving.That which is presented onto the sensor is always relative to the frame of the image, so one can pan with the moving subject or one can sit on the background with the subject blurring past ,but  The VR is designed to remove vibrations which are of a particular frequency, so the importance- impact of the VR drops off at speeds faster than the sync speed, or at relatively slow shutter speeds where one would really require a tripod anyway. Thanks for your input , but the comment about 'looking for problems' that don't exist isn't fair.. yes , I am looking at somewhat particular and esoteric subject matter., that's why I'm asking these questions of folks who seem experienced and well informed like yourselves,but if all I wanted to know was vague rules of thumb and uninformative Nikon rhetoric I would have already read it in the manual.Yes Youre correct that at sync speed the "slit would extend across the entire frame"</blockquote>

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