Some serious boosting of contrast in post on some of these shots. This is a very low contrast lens when in environments where light sources are anywhere near the image plane. The lens is also very taxing on the 8bit colour space of dslr's. We're looking forward to seeing how a 10bit or 12bit rgb with a wide dynamic headroom can harness the gradations of colour and flare!
Having such a low contrast baked into the footage by the lens, which needs to be post adjusted gives a warm and physical feel to the picture. Similar to pre flashed film stock.