Data point: a few months back I did a project where we sat at 5500' MSL (5000' AGL) with a 500lb camera system on the aircraft, for two hours, in one position. Well, "in one position" is relative as the aircraft wasn't autopilot-equipped so positional accuracy was limited to the pilot's ability, given limited reference points from that altitude. That was in an AS350B3e.
Given, there was some breeze up at that altitude, and it's unlikely you'd find no wind that high up. Like was mentioned earlier in the threads, all depends on the weather (and the machine).