This is the work of Dirk Dzimirsky. He does hyperrealistic portraits and figures. The big thing to me is his use of tinted paper, which to me would allow a greater range of values, both light and dark. I wonder how long it takes him to finish a drawing? Fllow him on his deviantart page http://ddzim.deviantart.com/ or at his website http://www.dzimirsky.com/ .