Filmic False color and 0.18 Grey card
BTW IMO the only way to have realistic lighting is with High EV HDR maps only.
When you try to mix HDR with blender lights there is no way to make them scientifically consistent each other.
It becomes more a eye pleasing only evaluation.
Also I would not use photographer addon because as far as I remember it doesnt bake settings into the EXR file, I would set desired exposure by manually set lights values as explained in the post I’ve linked before.
That’s all about your workflow tho.