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William Whitten -- Autodidact,'s avatar

Zavada was an emulsion chemist at Eastland Kodak in the late 40s up to the 60s, He led the team that invented Kodachrome II daylight film.

He and Raymond Fielding both assessed Costella's theory and concluded he is a rank amateur who knows nothing about movie film or movie making equipment, especially special effects. Raymond Fielding wrote the standard book on the *Technique of Special Effects Cinematography*

In 1965, Professor Raymond Fielding wrote the first textbook on the "black arts of Hollywood," titled The Technique of Special Effects Cinematography. Rollie interviewed him in 2006 about the possibility of Zapruder film alteration, and Rollie wrote in 2010 that Fielding had said any alteration of the Zapruder film in 1963 would be detectable today, and that such alteration would not withstand professional scrutiny.

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William Whitten -- Autodidact,'s avatar

Patrick J, Do you know how the so-called "ghost images" on the far left margin were created? They were caused by the claw mechanism that advances the film through the camera cause leakage of light into the margins. Those ghost images are of the last frame exposed. This means that the ghost images are in the same sequence and the exposed frames are; What this means for removing or switching any frame is that the ghost images would reveal the wrong image, a telltale sign of what had been done. This is very important because no one new new how those images were caused until Zavada did in investigation for the ARRB in 1992.

So the fact that all the ghost images are in the same sequence as the frames is one more proof that the Zapruder film we know today is the film shot by Zapruder in Dealey Plaza in 1963.

https://youtu.be/4Acn_caIFAs?t=23

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