I spent a long time debating on which camera I should buy. There were a lot of factors involved and I ended up going with the GH4 at the time for my needs. Everyone has different needs when it comes to technology etc, and I chose the GH4 mainly because of affordability. The A7S is a great camera and I would have made the plunge and purchased it if it wasn’t so damn expensive. Mainly due to the low light sensitivity the A7S wins, but for a more of a video perspective, the GH4 is king. I will primarily be using the GH4 for video projects so it’s the right choice for my needs.