I think a lot of us really appreciate the mechanical complexity of older analog cameras. I used to really be into cars and through that I am quite an italophile, which led to my fascination with Ducati motorcycle engines. They have desmodromic valves, i.e., valves that are both opened and closed by positive cam-actuated action, rather than like every other internal combustion engine that opens valves positively but uses springs to close the valves. At very high engine speeds, valves have the potential to "float", i.e., not close all the way, which along with springs failing at high speeds is why desmodromic valves were invented (though not sure really how necessary they are since Honda and Kawasaki seem to do okay without them). Stuff is happening so fast, it boggles the mind. At 9,000 rpm (if I have this right), each valve opens and closes 75 times per second. High speed movie cameras are in the same class of amazing mechanical speed for me. I don't understand why stuff doesn't just blow up more often