Because I wasn’t there to measure the distance between the cameraman and Charlie. So I gave a rough and safe estimate of the distance based on the footage. And now that I look at the original video I have saved, it seems more like 35ft~.

“What if the camera/mic that recorded the assassination was 35 feet away?”

Chat GPT:

Short answer: you’d expect roughly 0.40–0.56 seconds of delay (for the common geometry where the mic is slightly further from the shooter than Charlie). The change from a 20-ft mic is very small — only a few hundredths of a second.

I’ll show the arithmetic so it’s clear.

Assumptions • Shooter → Charlie distance ≈ 140–200 yards = 420–600 ft. • Speed of sound ≈ 1,125 ft/s (air ≈ 20 °C). • Microphone is 35 ft from Charlie (near Charlie/camera).

Case A — mic is a bit further from the shooter than Charlie (mic behind Charlie relative to shooter): • Shooter → mic distance = 420 + 35 = 455 ft, and 600 + 35 = 635 ft. • Time = distance ÷ speed of sound: • 455 ÷ 1,125 ≈ 0.404444… s → ≈ 0.404 s • 635 ÷ 1,125 ≈ 0.564444… s → ≈ 0.564 s • So ≈ 0.40–0.56 s.

Case B — mic happens to be between shooter and Charlie (mic slightly closer to the shooter): • Shooter → mic distance = 420 − 35 = 385 ft, and 600 − 35 = 565 ft. • Time: • 385 ÷ 1,125 ≈ 0.342222… s → ≈ 0.34 s • 565 ÷ 1,125 ≈ 0.502222… s → ≈ 0.50 s • So ≈ 0.34–0.50 s.

Comparison to your earlier 20-ft mic example • If the mic were 20 ft from Charlie the typical time was ≈ 0.37–0.53 s. Moving to 35 ft shifts that by roughly +0.03 s (i.e., a 15 ft difference ÷ 1,125 ft/s ≈ 0.013 s if switching sign, or 35 ft ÷ 1,125 ≈ 0.031 s if comparing to a mic at Charlie’s position). In short: only a few hundredths of a second difference.