Sony A7s for low light photography?

Hi,

Can someone comment on how this camera performs in low light? I have opportunity to pick up this camera for a great price and I'm tempted. However I want something that does well with low light. I know this camera is great a video, but just don't know how on still shots.

Please help.

I didn't find the right solution from the Internet.

References:
bit.ly/2FweJwe
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Thanks