Most Iray HDRi environments set don't allow depth of field use easily and DIRECTLY out of the box. This one does!
You won't have to tweak anything, all the presets are there for you to just click and render.
What you'll get is 1 ULTRA HD (up to 16K) custom made Environment, with or without Depth of Field presets.
This environment, shot on the European Atlantic Coast, shows an unpopulated sunny beach.
This scene has barely any modern content so you can easily use it for any fantasy or medieval renders.