Yes, in general, if the images of successive balls are closer together it means that the ball is going slower, but evidently the difference in inter-flash distances was too large to make a good photo. You need a very fast flash at the start to be able to "connect the dots" when the ball is moving very fast and that same speed of flash would wash out the picture if used clear to the end of the shot. The last segment of most carom shots takes the majority of the shot time if the ball has to travel most of the length of the table.Strobe light? I thought slow ball speed=less travel,so balls in the picture
are closer together.Faster ball speed=more travel,so balls are futher apart.
This based on the assumption that picture represents multiple exposures?
Another ? regarding photo cue ball appears to go under the rail?