Nope, the photographic team was separate from the acoustics team. They said some heavy activity was happening before Kennedy went behind the sign. Unless you want to say that the level of subterfuge in the HSCA was just that massive, please say so because we can swiftly throw out any "evidence" they presented
Read the dissents by those House Committee members who voted against the findings of conspiracy. Every one of them references the fact that they found the acoustic study unconvincing or inadequate. Not one even mentions the photographic panel's conclusions about evidence for a shot at Z190 or thereabouts. Quite simply, they didn't find evidence in the Zapruder film to buttress the conclusion of a shot at that time wounding both JFK and Connally, and I don't either.
http://aarclibrary.org/publib/jfk/hsca/report/pdf/HSCA_Report_4_Remarks.pdf
The photographic panel, from a 'jiggle / blur analysis' of Zapruder's panning errrors, concluded the second greatest disturbance in panning motion occurred shortly before JFK went behind the sign (the head shot reaction of Zapruder is the greatest disturbance). However, they apparently didn't even consider something as simple as whether Zapruder was trying to decide at that point whether to stop filming or continue filming as the President went behind the sign, and if the latter, whether he should attempt to pan smoothly or jump ahead to the point where the President would emerge from the sign. Any indecision on Zapruder's part - and there must have been some - would affect his panning rate as he tried to decide how to proceed, and would introduce errors into their assumption that panning errors might be tied to gunshots.
The problem is the assumption that Zapruder would react to the sound of gunfire and that a panning motion or film blur analysis would allow them to scientifically determine when shots were fired in the Zapruder film. The greatest blur comes about five frames after the head shot, but that head shot is not just aural to Zapruder, it's visible... JFK's head explodes in a massive cloud of blood, bone, and brain. Of course Zapruder would react to that visual stimulus. But attempting to carry it to other shots where there was little visual reaction by anyone and where Zapruder only heard the sound of gunfire was a mistake, in my view.
Separate from that, the photographic panel also felt they noticed some reaction by President Kennedy by frame 207 to a "severe external stimulus" that they couldn't define.
That severe external stimulus could have been nothing greater than JFK's reaction to the first (missed) shot.
It was the attempt to marry the acoustic analysis conclusion of a 'impulse' at Z190 with the photographic panel's jiggle analysis that led to the conclusion of a shot wounding both men at that time (Z190). That was the only possible conclusion if the acoustic evidence was legitimate because, according to the acoustic panel, the next shot was about six seconds later (about frame 295) -- far too late for a shot to wound JFK and Connally.
So the Committee either had to shoehorn a shot wounding both men in at Z190 or conclude the acoustic analysis was flawed and didn't match what we can observe in the Zapruder film. They chose the former, but further analysis shows they should have chosen the latter.
http://www.history-matters.com/archive/jfk/hsca/reportvols/vol6/html/HSCA_Vol6_0017b.htm
Hank
