Sony will respond to users and reduce rolling shutter with new sensor technology

Sony A7S with Atomos Ninja Star

The A7S is so close to being a ‘complete’ system for high end video quality in a small prosumer camera, but there’s one issue that has quite rightly been highlighted by filmmakers such as Andrew Wonder and that is the rolling shutter distortion. The A7S actually has a very fast sensor with high efficiency made possible by the latest technology but because it does not skip any lines when reading out the image the net result is a scan that takes roughly as long as the older 5D Mark II, which does line-skip.

Sony plan to fix this by introducing a new sensor technology which can read entire lines of pixels in batches of 4 simultaneously.

Read moreSony will respond to users and reduce rolling shutter with new sensor technology

James Miller adds £167 hardware 4K scaler box to Sony A7S with stunning results

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Picture (“Buddy”) courtesy of James Miller, inset – the CYP 4K HDMI scaler

The picture above (click for 1080p original) is from the 4K full frame sensor inside the Sony A7S (ISO 3200, S-LOG2).

Internally the camera does a simple downscale of the 4K signal to 2K for standard 1080p XAVC or HDMI recording – but James discovered adding a hardware scaler on the end of the 4K HDMI signal results in a more detailed 1080p image which is light and day different. The great news is this scaler is only £167 in the UK.

Add to that an Atomos Ninja Blade or Ninja Star for taking the image from the scaler and recording it to ProRes – and you have one of the best 1080p images available at any price.

Read moreJames Miller adds £167 hardware 4K scaler box to Sony A7S with stunning results