The Benefits of HLG
HLG photos have a wider dynamic range than those recorded using SDR. They are consequently capable of reproducing colors in rich detail, similar to how they actually appear to the human eye. HLG minimizes loss of detail in highlights and shadows to render a richer range of tones in all areas of photos featuring scenes that include both bright and dark areas, such as, for example, sunsets and sunrises. It also serves to reduce loss of detail in highlights in scenes featuring bright light sources such as light shows or the sun.
Note: These images are concept art intended to illustrate the differences between SDR and HLG. The tones differ from those that would be seen in the actual images.