>High dynamic range. This makes recording in the dark clearer to see, although not sure how this translates on Tele?
Imagine a photograph of a white car on a sunny day. With a traditional camera, you have use an exposure appropriate to the environment, and your 'output' is a piece of paper, with white being the brightest and black being the darkest. In your printed photograph, the car would appear to be just as bright as the sun - the dynamic range is constrained by the paper.
Now, imagine if your output was formed of pixels, each of which could either be as bright as the sun or as dark as a coal mine. The white car would appear white, but your eyes would now perceive the sun - and highlights on the car - as being far brighter. This display would be far closer to how we perceive the everyday world around us than a paper print - or traditional LED TV - could be.
For this to work, the whole workflow - from camera, through editing and onto the display - must contain extra information per pixel.
Your car dashcam is probably capturing a HDR information, but its output is a conventional LED screen. Because its purpose is to capture evidence (a license plate on a sunny day, or at night) rather than to give you a realistic image, it will massage its raw sensor data into a JPG.
DSLR cameras can dump their sensor data to a RAW file, allowing the photographer a little bit of margin over exposure at the post-processing stage.