Canon 5D mk III vs Sony A7s I have been shooting both video and stills with my canon 7D for the last 6 years and I am looking to upgrade my kit. My initial thought was to get the 5D Mk III and use it with magic lantern to record video in raw but after researching I have seen that a lot of people are transitioning to the Sony A7s.

I am seduced by the smaller size of the A7s and the apparently simpler post-production process for video (smaller files that don't require conversion) but I have always loved the look of Canon and I know it will also be great for stills. 

Does someone have experience using both? Is one superior to the other?
Forward thinking the A7s is capable of 4k (with external recorder, e.g. atomos shogun) which is trendy and can shoot at a higher fps (120 fps) and in S-log which for me is three major selling points over the 5D. Not to mention the picture is a lot sharper. The 5D in my opinion is not something I would want to use given the option of the A7s, the image is soft and muddled in comparison. I have used both.

That being said, if you are not concerned with taking pictures, and strictly want to get into video may I suggest buying a C100 MK I. On ebay they are in roughly the same price range, and the camera, although not out performing the A7 in terms of resolution and frame rates, has a beautiful Canon look out of the box, professional video controls + form factor, and many people prefer C-log over S-log.

That being said, if I were to get a B-cam to my C100 MK II, I would get the A7S. Sure it might take some work to match the Sony green-cast to the generally more neutral Canon image, but the pros far outweigh the cons.