My apologies to Mr Salgado for getting his name wrong, - I was searching my memory banks but I guess a few pixels had gone noisy !, - However his pictures surely are memorable !
I'm wondering what camera he had for the shots of Reagan's assassination attempt ?
There is another factor which has influenced my photo-life, - I bought a s/h IIIb with f2 summitar in about 1969, (cost £25), and became very accustomed to working with it. I can still work it in my sleep, and just nothing else feels the same, or works the same way. It's what your right arm is for. Throw the lens cap away and you can't go wrong if you practice, practice, practice, - and shoot, shoot, shoot.
Then you stand a chance when a unique photo oportunity suddenly arrives, - at least you don't have to wait for the thing to switch on and self-test and decide it can't auto-focus !
JC.