RE: Lets talk about binoculars
Buddy, the type you talk about relies on your eyes and brain to do the focusing. Its a bit hard on the eyes but easier with better more expensive glass. All of my Steiners (7X50, 10X50, 12X52) are that type. Just focus once and off you go. These types are not great for bird watchers who look at birds in great detail for long periods of time. What is really great about the focus once type of binocular is when you are scouting late and there is barely any light and you don't have to fiddle trying to focus, they are bang on when you put the binos to your eye.
I ued to find it hard to pick out binoculars. The first set took me over a year to decide on. I had a real problem shelling out big money but once I did, I was really happy.