And even the changes in Oswald, Leavelle, and "Ruby" are too great to happen in .6 second. And remember that the changes in what Oswald was doing had to happen in .3 second because if we assume that the shot occurred halfway between Beers and Jackson (and I don't know what else we can assume) then Oswald did not start to react and alter what he was doing until .3 second before Jackson, since the shot presumably occurred .3 second before Jackson, and he was reacting to the shot. But wait. That's impossible because in the films we can see what Oswald's reaction is; he makes a pained face and starts going down.
There's no arm-slapping going on. So, there is no way to make sense out of the Jackson photo. It contradicts the films.
What this is, really, is a public delusion, a societal delusion, a mass delusion. The Beers and Jackson photos are like a Dick and Jane storybook- for adults. "There is Oswald. Oswald is about to get shot. Jack Ruby is about to shoot Oswald. And now, Oswald has been shot, and he is reacting. Look at Oswald react. He does not look happy."
It's a case of adults being spoon-fed, like children, by their parent, the State-Media complex.