Making sure that 4K signals maintain their integrity offers big, new challenges. โ€œItโ€™s a change in physics, in the way you make the cameras and capture the images,โ€ says PHABRIXโ€™s Phillip Adams. โ€œWe need new instruments to understand what is happing with the high-dynamic range.โ€ And then there are issues when the signals are also being distributed over broadband and mobile networks.