I know what you mean. I used a Nikonos V for years. I stopped doing underwater photography about 5 years ago. Now I want to get back into it, so I go looking for new camera equipment.
What I am finding is that everything is digital now. So I guess I’ll have to re-learn this u/w photography thing.
Sure, things like composition and such are going to be pretty much the same, but exposure, lighting, etc... has all changed. And then you have to learn a computer program in order to "develop" your pictures. Ok, so I’ve used Photo Shop and I like it for land based shots, but how is it for u/w pictures?
Yep, I guess it’s back to school.
Technology, don’t ya just love it...!