Types of HDR
There are various kinds of HDR standards, but 'HDR10' is the most commonly used. Recently, a new technology called HDR10+ has been introduced, and the difference between that and HDR10 is whether dynamic metadata* or static metadata is used. Dynamic HDR technology means applying metadata to each scene, and then delivering a more optimized picture quality compared to that of static HDR technology.
* Metadata refers to the additional image information found within content. This includes the color and brightness information used in the HDR image mastering process.