“This could record a sequence of 50 images on to 35mm film at 100,000 frames per second. But by the time of the Trinity test it was outdated and too slow to record the ultra quick reaction in the plutonium core which was in the region of 35-nanosecond.”
(There are 1-BILLION nanoseconds in a single second: 35-ns = .000000035-seconds)
“Head of the photography unit, Julian Mack said that “the fixed short focus and low quality of the lenses would probably have made the Marley camera pictures useless”.
He helped develop the Mack Streak Camera, which had a 10 million frame per second limit, one frame every 100 nanoseconds.”