>>2860119Bro, come on, you don't even have to read a photography history book to know about Nikon and Vietnam. It's a lot of the Vietnam history books. Nikon F (1959) and the Nikonos (1963) were very popular cameras during the war and for good reason. Their popularity with the photojournalist spilled over to the consumer market and the German share of the camera industry started its decline. Hell there's even a single PJ that's credited for getting the Nikon F so quickly adopted in Vietnam, if you really care I can see if I can hunt down the book he's in and get you a name.
The Canon advent with digital is recent enough that unless you're still in high school you should have lived through it to an extent. They made really good digital cameras (both in terms of image quality and function) before anyone else did while making them affordable. The shift to EF was hard for people to swallow but it did make rolling out auto-focus much easier. There was also some issue with rear element distance that it addressed but to be honest I don't know that much about that portion of the switch.
Like I'm not making this shit up, older photographers still talk about the switch canon, and much older photographers still talk about when the Nikon F became a thing.