I'm sorry if this sounds like a dumb question and I hope I can explain myself properly.
What is the difference between manual and auto focus with a prime lens?
I'm about to get the 50mm prime for my Nikon D40X and as I've mentioned before that model only allows the option of manual focus with that lens. I keep thinking this is a disadvantage.
But I can't get my head around what this means when I can only compare it to my first film camera, a basic point and shoot. When I went travelling 25 years ago (yikes!) I took with me a little film Pentax Pino - I just aimed at things and when they were printed pretty much everything was in focus. You could aim without looking and get general shots, in focus, or specific shots if you did the walking. But there were no adjustable bits on the camera.
So how is this different to a prime lens? What/why/how do you use/need autofocus? I 'get' that you focus when you have a zoom lens because there are different focal lengths, but I'm totally confused about this!
Sorry about the long winded question but I'm finding it hard to explain my question let alone understand it??!!!
Thanks for your patience and answers