How close do you have to be to your party member(s) to heal them with a health orb?

I have seen this but it did not answer my question.

While fingering through the achievement list, I noticed the Life is Beautiful achievement:

Seeing as the description mentions that you can heal other players by picking up health orbs, How close does the party member(s) have to be to you to receive that heal from an orb you pick up?

The party members don't actually have to be that close at all. The orbs that are displayed will apply health to everyone when the orb is picked up by anyone in the vicinity. This is probably why the required amount for this achievement is ridiculously high. This thread has a similar discussion.

05/17/12 - Last night my girlfriend and I did a little bit of testing, and we found that even someone standing pretty far off of the minimap view can still get the globe heal. I believe the shrine buff range is the same as health globes.

As far as the actual distance from the player is concerned it might be pretty hard to test.