The following images were arrived at by taking a 3-shot handheld bracket and aligning and tonemapping it in LuminanceHDR, then manipulating levels & curves in Showfoto (the Digikam image editor) - as was the one B/W conversion - while noise-removal plus final sharpening was done in NeatImage for Linux (the only bit of non-free software I use/own). The thumbnail creation with dark edge and watermark name in the lower right is done through a bash script that uses ImageMagick.

Old Amersham by newmikey, on Flickr

Tube station waiting room by newmikey, on Flickr

Tube station waiting room by newmikey, on Flickr

Old Amersham by newmikey, on Flickr

Tube station waiting room by newmikey, on Flickr

Tube station waiting room by newmikey, on Flickr