Actually both of these were shot (once again) with my el cheapo eBay wide angle .42x converter lense, mounted on a Canon 28-80mm f/3.5-5.6 EF USM @ 30mm (effectively 30x.42x1.6= 20mm) It does give quite the fisheye effect as the distorion of the converter is horrid. I'm just trying to get better at using it to my advantage and I though this was an interesting subject.
In PS I converted them using the red channel only and a bit of curves adjustment. Also a little vignetting was added using a PT lens plug-in and USM to crispen the lines a bit.