probably, this option is only accessible in camera 2 api mode
you can check what is the value of hdr-mode in the about window
work on my Galaxy A5 2017
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I love Opencamera- I'm using it on a Samsung Galaxy J7. There seems to be no HDR mode available that I can find- am I missing it?
If it's missing intentionally I assume it's a limitation of the Camera2 api lacking on this phone?
probably, this option is only accessible in camera 2 api mode
you can check what is the value of hdr-mode in the about window
work on my Galaxy A5 2017