If you think there's no way the Zapruder film could be altered, you should watch this presentation by Dr. David Mantik, given in December 2024.
https://rumble.com/v6zimwo-a-closer-look-at-the-zapruder-film-the-case-for-alteration-david-mantik-md-.htmlHere are some noteworthy segments in the presentation:
• Early Viewers Saw Forward Head Movement
[6:20] Both Dan Rather and Deak DeLoach saw JFK's head go forward in copies of the film that weekend, as did Ike Altgens who saw it in real time, but no one has reported forward head movement since 1963.
• Hollywood Experts Identify Fake Black Patch
[8:18] 72 of 75 Hollywood film experts agreed that the black patch on JFK's head was fake, and it closely matches the white patch on lateral X-ray films.
• Sydney Wilkinson's High-Resolution Analysis
[8:52] In 2008, Sydney Wilkinson purchased a third-generation forensic copy and created 6K digital files with 14.7 megabytes per frame, nearly 12 times more information than HD TV.
• Logarithmic vs. Linear Color Space
[9:45] Wilkinson scanned in logarithmic space retaining all available information, unlike home HD TVs which use linear color space with adjusted contrast and color balance.
• Density Analysis of Black Patch
[10:31] NASA scientist scans across JFK's black patch compared to John Connally's head on the same frame show JFK's head is densely black while Connally's appears natural under identical lighting conditions.
• Paul Routan's Professional Assessment
[12:37] Film restoration expert Paul Routan, with credentials dating to the 1950s, identified the black patch as fake, stating it "doesn't look real" and "moves differently than his head does."
• Aerial Optical Printer Technique
[18:18] Routan explains the alteration was accomplished using an aerial optical printer, creating a patch overlay that could be completed overnight using technology available in 1963.
• Color Separation Analysis
[19:25] Before the head shot (frames 308-310), the back of JFK's head shows natural color separation of red, green, and blue components, but after frame 317, it becomes uniformly black without natural color variation.
• Missing Frames and Altered Explosion
[29:10] The existing film shows the head explosion in only one frame with graphic violence, but Brugioni remembered it lasting longer with a white mist, and he definitively states frames are missing from the film.
• Authentic Occipital Wound Evidence
[40:01] Doug Mizzer's analysis shows Hawkeye Works in Rochester forgot to cover up an authentic occipital wound in some frames, revealing the original wound location in the back of the head.
• First Generation Images at Sixth Floor Museum
[40:47] Mantik and Sydney Wilkinson viewed extremely high-resolution first generation images at the Sixth Floor Museum in 2009, seeing a trapezoidal black patch with sharp edges, but later visitors saw different, lower-quality images.
• Film Alteration Process Explained
[42:31] The alteration process involved loading the original film in a projector, bouncing it off a mirror, passing it through a clear cell where alterations could be added, then photographing it with an aerial optical printer.
• Chain of Custody and Technical Issues
[43:28] The film went from 8mm at NPIC Saturday night to 16mm when McMahon and Hunter saw it Sunday night, accomplished through the Bell and Howell Model 414 double-8 system that exposed both sides of the film.
• Zavada Report Contradictions
[47:44] Film analyst Rollie Zavada's report contains internal contradictions about whether copies could be distinguished from originals, and he later reversed his opinion about film splitting, contradicting eyewitness testimony from Kodak officials.
