you could use greenshot latest release https://github.com/greenshot/greenshot/releases
there is an external command plugin inbuilt
configurable via the preferences
install hdrfix to convert HDR colour space back into SDR https://github.com/brion/hdrfix/releases
you might need to fiddle with the settings..
steam overlay gets it right with the conversion, as well as various games such as no man sky photo mode.
its only when falling back to windows OS screen capture, you end up with overexposure.