Isn't this an incorrect way of judging the quality of an image? Unless one knows how the scene looked through his eyes in reality how can he really say which image is better? A good image is not just what looks good but also one which closely resembles the actual reality.A punchy, shiny and clear image is always preferred but not when those things are far from what the actual scene is. If the tuning is being solely done based on the blind tests then I believe it'll lead to more artificial looking images. I've already seen how OnePlus camera modifies the skin color tone currently. It just changes how the skin actually looks in reality.