The S stands for sensitive, well not quite it stands for sensitivity. We’re talking about the S is in Sony’s latest camera release, and celebration of new technology, the a7s. In this instance Sony are using sensitivity as a precursor before the words ‘to ISO’ and not because they have boldly decided to launch the world’s first emotionally unstable camera . Believe the marketing previews and the a7s does seem to be incredibly capable when operating in low, low lighting conditions. With the a7s Sony have chosen the opposite strategy to Nikon – who released a modest boost on the D4 with their D4s- by completely re-working, rather than just tweaking, the earlier generation.