far/farther/further afield
1. Larger in scope. This project has gone far afield after our initial experiment didn't yield the data we were looking for.
2. Away from some place or thing. If you want to travel further afield, though, it'll be a very long walk.
far afield
Wide-ranging, at a distance, as in I started out identifying wild mushrooms, but since then I've gone far afield in other branches of botany . [c. 1400]
far/farther/further aˈfield
far away from home; to or in places that are not near: You can hire a car if you want to explore further afield.Journalists came from as far afield as China and Brazil.