Just watched this video about a vintage 70s SLR Canon camera.
https://www.youtube.com/watch?v=r_uBHmAhnfoIf you grew up with analog cameras, you'll know most of the stuff he explains. Though it's been a while, so it's nice to refresh. Plus he takes it apart a bit to show the insides.
I was thinking of starting a new thread about vintage analog cameras and tech, but might as well drop it here. I confess I grew up more with Minoltas.