3D double sketch-book drawings by Nagai Hideyuki

Japanese artist Nagai Hideyuki makes realistic 3D drawings using ordinary charcoal pencils and usually not one sketch-book, but two. Placing one book in a right angle to the other, he melds the images on either pad together. In the process, an amazing optical illusion happens; his pictures seem to stick out of the sketch-book.

Occasionally he uses only one sketch-book to create the same effect though, using shadows and light patches.

                     ~ Found through Colossal, images from Hideyuki's Website.