Shot on a Canon 5D Mark III, 70-200mm f/2.8
ISO 100, 1/200th of second, f/11
4 Light setup:
1 Profoto USA D1 in a Westcott Apollo to model right.
1 Profoto D1 bare to model left, up and behind her head, to fill in shadows.
2 Canon 600EX behind the model, to the left and right, to bring out the hair and head from the background.