I attended a Welshot HDR workshop on Saturday where we took a jaunt around Liverpool Cathedral and then spent some time post processing them using Photomatix 4 (which is a BIG improvement on version 3). These, however, were produced using HDR Efex Pro and SIlver Efex. What can I say? I'm a bad student. I was trying to step away from the traditional HDR "look" with these. I wanted to try HDR with black and white and also HDR with shallow depth of field. I rather like the sketch-like feeling of these shots.