Today I saw a nice fisheye picture and thought it would be fun to play with a fisheye to do some urban city pictures. On the other hand I'm lusting for a Sigma 10-20 for some while now which isn't fisheye'd, which can be good or bad, depending on your current artistic mood. :wink: So now I'm contemplating which type of lens would be better. I'm attracted by the huge viewing angle of a fisheye lens but am not sure if I will be happy with the distorted view everytime. I know you can de-fish it in PP, but then it may also mean the Sigma would have been the better choice. How much picture angle is lost in "de-fishing" (if any)? Is the practical viewing angle that wider compared to the 10-20mm? I haven't yet seen any side by side comparisons of both lenses on the same scene that could help me decide which one I would prefer, and how a de-fished image would look against a regular 10mm shot of the Simga. Has anybody had the chance to play with both?