If you want to improve the Sony A7s noise performance even further do this… March 10, 2016 News 0 Comments Tweet Follow me With that “thing” attached on the A7s you can cool down the sensor by 18 degrees. And this will improve the noise performance of the camera. Cool! More info on SonyAlphaForum. Tweet Follow me **This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links.