The very popular RED digital cinema cameras have always shot in compressed form using a low-latency wavelet-based codec (presumably with some ASIC or GPU acceleration on board).
http://www.red.com/learn/red-101/redcode-file-format
http://www.theblackandblue.com/2012/05/02/shooting-red-epic-...
What cameras shoot uncompressed 8K HDR video? That doesn’t even seem possible given current SSD bus speeds. Note that many high-quality lossless formats are actually still compressed (they subtract current frame data from the previous frame and then apply LZ4 for example).