Sony A7s High ISO Test by ArtBenny
ArtBenny tests the Sony A7s' high iso capability by shooting in a pitch black room. The Zeiss 55mm f/1.8 Sonnar FE lens was used for the test. He states that the A7s was still able to autofocus in such low light.
The Sony A7s will be available on July 8th and is priced at $2500.