I'm not 100% sure, but it seems it has to have been my old 60's macro with an adapter ring (so it'd fit my XT.)
Yes there was post processing out the wazoo. I used the camera raw to simulate real HDR by creating several TIFs that had a range of exposure settings. (Real HDR is only achieved if you do the different exposures in camera) Then I ran them through a program called Oloneo, back when it was in it's beta stage (and free), and then I'm sure there was some dodging/burning and sharpening in Photoshop.
Can't really remember the whole process. It was more of an experiment than anything.