Love these images with Ambre. I used the Hasselbald H4D-40 with the standard 80mm lens. We used a brown green backdrop from Gravity to contrast to the auburn hair. One light, nothing special here. Post in Photoshop, but mainly skin work, colours are almost natural out of camera. 

This is my classic setup. More and more I like to shoot on white paper background for a more fashion type of look. The Hasselblad Phocus provides for the typical hallow around the model.