Cinema5D correction: "[UPDATE 2 Aug. 25 '14:] The software manufacturer informed us that their software had a bug that misinterpreted the Sony A5100′s blacklevels (that seem to inherit green noise) and strongly affected the results for the Sony A5100 dynamic range test. We apologise for any inconvenience this might have caused."
The correct dynamic range is: 10.5 stops - Sony A5100 $550 1080p60
Using the same A7S formula, hopefully Sony will introduce a 12MP APS-C low-light camera with internal 4K recording. Reportedly, A7S doesn't have 4K internal recording due to heat generated by the full-frame sensor. Well, APS-C sensors generate less heat.