I've been lucky enough to have a Sony A7s for the past week and in between working for Newsshooter.com at Broadcast Asia in Singapore I've been testing the camera out.
One of the big draw cards is the cameras low light ability. In short the A7is is without a shadow of a doubt is the new low light king. I have never seen another camera that can compete with this cameras low light ability. I would use it happily at 20,000ISO and even up to about 50,000ISO.
What i'm more excited about is the ability to shoot at say 10 or 20,000ISO and be able to stop the camera down to get a greater depth of field and sharpness from my lenses.
A FULL REVIEW IS NOW UP AND CAN BE FOUND HERE: vimeo.com/98752784