Canon 20D, Canon 17-40 F/4L, no flash.
ISO 100
17mm
f/6.3
2.5" exposure
I wish I had shot RAW, honestly. Just highest quality. Post processing was removal of some junk (very minimal, honestly. Biggest offender was a single reflection in the black area), crop, sharpen, color correct.
This is the first time I've ever shot any "L" lens, and I wasn't sure I was seeing a difference. I usually shoot the 28-135mm, and it's worked out pretty well. However, in PP, I saw the difference. There was much less tweaking, and a much lighter use of unsharp mask.