Oleg Rogoznev is a Russian artist with a really impressive craft when it comes to design of realistic vector images. His work takes on hyperreal qualities by focusing on extreme detail (see The Flower below, at the left hand side). In the Still life (below right) he uses subjective lighting. In the Large eye he captures realistic detail, while allowing some of hair and skin elements to show through as simplified vectors. You can visit his portfolio for further works.
Deviant Art gallery