Portraiture - Nadar

Another artist I have chosen  is Nadar. Here in this image below you can see that the photographer has decided to capture the subject gazing beyond the Camera. Her stare makes it look like she is lost in thought, similar to other images I've seen. The shadowing on her face reminds me of Rembrandt lighting and is caused by placing the single light not quite all to one side but more diagonally to the side and raised above the head of the subject. Thus creating  the half shadow, half light on each side of the face but with a little light shining on the top of the subjects cheekbone on the shadow side.  
Photographer Nadar and found on this http://photographyhistory.blogspot.co.uk/2008/01/nadar.html