Earlier this week Sony got a lot of attention with its Alpha 7S announcement - a 12MP full-frame mirrorless camera with 4k video capabilities and ISO expandable to 409,600 for stills and video. This sounds impressive, but how does it actually perform? Sony just released a video demonstrating the high ISO performance of the Alpha 7S. Over a minute and half, using a Sony A-mount 16-35mm F2.8 lens at 1/50, the video shows the contrast as it progressively steps up to ISO 409,600 starting from 1600. 

What do you think of the Alpha 7S high ISO performance?

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