Very nice images ... did you apply a lot of distortion correction for this UWA lens?
No software correction applied. I shoot this lens on a 1D4, and 7D when shooting sports (and a 5D at other times). The crop body will reduce the fisheye effect, (when zoomed to 15mm) especially on the 7D. And there is some cropping of the images in post which will do the same. Thanks for the compliment!