Review of the Sony A7S

I bought my Sony A7S in April 2015 after reading reviews of the the incredible low-light performance such as Lonely Speck Review. This was before reports began to emerge about the notorious "star eater" issue and it was the beginning of a love hate relationship with this camera.
It is only fair at this point to mention the existence of a later Lonely Speck article Lonely Speck: Why I no Longer Recommend Sony Cameras for Astrophotography

I don't intend this to be a full review but a summary of my conclusions after extensively using the Sony A7S for deep sky astrophotography.

The main advantages

The main disadvantages

Other relevant information