OK, I was shooting a landscape on uneven ground and my tripod tipped over and the my trusty 10-20 sigma took the brunt of it. Two big marks right on the front element. So unless someone knows some do it yourself first aid that might make the lens usable again I need something else, and I would prefer if it was FX compatible. I'm wondering about the 12-24 sigma. For me to bite the IQ is going to have to be at least as good as the 10-20. And yeah, 12 is wide enough for me but what does this look like at 12 mm? Distorted beyond hope of fixing or is it ok? I really do need a wide angle here soon, and I could afford the 14-24 but it would completely and totally break my bank. If the 12-24 is as good as the 10-20 and if it looks alright at 12mm I might bite... What are your thoughts? Thanks in advance.