Actually, I used the Sigma 50mm f/1.4 DG HSM Art lens for the shot (I thought maybe I had typed it wrong in the post or on Flickr, but I typed it right). :-)

I considered using the 35mm Art (which would have given me more composition options), but I went with the 50mm lens to help avoid distortion. Overall it was a good choice, I think.

I did use the Sigma 24mm f/1.4 Art at a wedding a couple of weeks ago. It performed excellently. It's my new favorite low-light indoor event lens. But just as with any 24mm lens, you will get quite a bit of distortion if used close-up. :-)