B&W HDR Experiment

I've been experimenting with creating HDR images in Ubuntu using Qtpfsgui (recently renamed, more sanely, Luminance HDR). I couldn't get the colors quite right, need to dig more into the docs for that, so I've converted the image to Black and White. I've used 3 images taken at -2, 0 and +2. Perspective correction has been done in Hugin and I've applied a bit of noise reduction in Gimp using the G'Mic plugin.