I recently started working on a film making stills and behind the scenes, in some cases shooting the Zuiko 50mm f1.4 Zuiko lost some shots because I have to focus manually. I've been thinking about these two optics that are good for portraits and autofocus I can have better results. But I've also been looking beyond.The Sony has OSS and that' is a plus, so is faster; 1.8 aperture. I prefer the focal of the Sigma for portrait and have a better dimension, the SEl its very large, but I'm not convinced and sure of the aperture f2.8, is the problem of being acclimated to optical below F2. With the Sigma 30mm f2.8 and 135mm Underground f2.8 there are many situations where I miss some additional stop. I think the main option would be the SEL. Thanks.