I just received an email advert from a DxO competitor that states:
Get HDR Looks From a Single Photo!
You don’t have to shoot a bracket of exposures to create an HDR look. With ON1 HDR you can open a single, well exposed raw photo and use the HDR toolset to reveal all of the shadow and highlight detail. End excerpt.
Note that there is a plugin to do the above that works with: Each app provides compatibility with Adobe® Lightroom® Classic, Photoshop®, Affinity Photo, Apple Photos, and Corel PaintShop Pro, with Capture One support coming soon. Note that PL is not on the list because PL does not accept, other than Nik, plugins designed for the Adobe products, etc. Is there a preset, configuration, or plugin that will have the same functionality? Clearly, if the raw pixel is “black” or “blown”, any HDR is using artistic license to add light to “black” or to add data to “blown”, although the result may well be aesthetically and/or client pleasing.