Oswald took 10.2 seconds to fire all three shots.

[Zeon Mason]

So when exactly did Wiegman HEAR the 1st shot? If Weigmans not in the  zone of the sound pressure (shock) wave then maybe he just felt wind which was gusting up to 20mph at times that day.

[Tom Mahon]

So when exactly did Wiegman HEAR the 1st shot? If Weigmans not in the  zone of the sound pressure (shock) wave then maybe he just felt wind which was gusting up to 20mph at times that day.

Has Wiegman just heard the first shot, the second shot, or the third shot when, still in the car, he starts panning his camera back to the right (with a lot of blur) and everyone is looking intently down Elm except for one of the two guys who's wearing light-colored work clothes and who's looking back towards the TSBD (see 1:04 in the film)?

[Charles Collins]

Has Wiegman just heard the first shot, the second shot, or the third shot when, still in the car, he starts panning his camera back to the right (with a lot of blur) and everyone is looking intently down Elm except for one of the two guys who's wearing light-colored work clothes and who's looking back towards the TSBD (see 1:04 in the film)?

According to Dale Myers’ film synchronization Wiegman began filming at Z259 which is 2.95 seconds before the shot at Z313.

[Tom Mahon]

According to Dale Myers’ film synchronization Wiegman began filming at Z259 which is 2.95 seconds before the shot at Z313.

If that's the case, then Wiegman, still in the car, must have started panning back to his right in response to the third shot.

[Charles Collins]

So, does Wiegman start panning back to his right in response to hearing the first shot, the second shot, or the third shot?

I don’t know why he starts panning back to his right. But since he doesn’t even start filming until Z259, I believe that the first two shots had already happened before he even began filming. Does that answer your question?