TV Question: Explain HDR

more colors available to display on the screen. Just makes coloring of videos better.

Pretty much all new shows from streaming services come in HDR (usually Dolby Vision but sometimes HDR10+). HLG is another form of HDR that will be used for OTA HDR when it arrives.

EDIT: when you get into the HDR types, Dolby Vision and HDR10+ allow greater contrast between dark and bright scenes due to dynamic metadata.

Your phone should have an HDR settings on its camera.

Turn the lights off in your house. From the middle of your room, take a photo of the outside through the window. Your inside the house will be dark and outside will look normal. Now do the same with HDR turned on. Now you should see inside the house and outside the window. That is what HDR brings.

TVs also tie an expanded color space as well to HDR.

High Dynamic Range, such as shot on a RED Komodo camera, has an available 21 stops of dynamic range. The camera's are able to discern levels of details in the shadows and highlights that can only be reproduced with a video display set comparably equipped. Canon has filed a new patent and announced a new sensor with 738 individual zones, each able to act independently of the others, and with 27 stops of dynamic range. I'm anxious to see if this is a RED killer.

These cameras are able to obtain both an overexposed image and underexposed image. By combining them, the crisp details and highlights from each combine to form a more dynamic, deeply colorful image.