Hi, I use my Canon Rebel T2i camera almost exclusively for filming. I'd really love a fast 24mm lens to compliment my 50mm f/1.8 so I can shoot in ambient light at night with consistent results when I'm wide or close. The question is: Would I be better off going with a Sigma 24mm f/1.8 because it's new glass, or will the old FD 24mm f/1.4 give me the results (better) I'm looking for if I can score it for the same price as a Sigma? I don't need manual focus at all, so that's not an issue with the FD lens. My concern is that even after I get to know it well, the picture will be fuzzy because it's not optimized for a dSLR. I'd rather have a clean f/1.8 than a fuzzy f/1.4. I haven't been able to find any test footage of an FD 24mm f/1.4 on a Rebel, 7D or Mark II body, which is why I'm uneasy about committing to the FD. Any thoughts or advice?