Like many other people in the past year or two, I've made the switch from Canon to Sony for for video purposes.  I've been shooting video mostly with Canon DSLRs for the past 5 years and aside from ISO performance in sensor technology, they have all had the same exact features since the 5D II was released.  I don't know whats going on at Canon but they are not keeping with the times.  A year ago I was looking into an alternative to my 6D and found myself deciding between the Panasonic GH4 and the Sony A7S.  I went with the Panasonic since it was better value but it had a different place for me since it was so different from a Canon DSLR.  I was either using one or the other, very rarely would I use both on the same shoot.   I was looking for an all in one package.  Since Sony released the A7S II, I had no choice but to look into it.  On paper it seemed like a real game changer...