Thank you for replying! I reset the controller, and reinstall freeflight 6, and try a few quick comparison outdoor. Now all videos (HDR and Natural) are back to normal, previous video looks like focusing is out of focus. Before 6.3, videos are always normal.
Regarding the cinema mode, I did a quick comparison inside the house, they are all sharp for 4k 24 fps, 4k 30fps and cinema 4k 24fps now. Hopefully, this problem is resolved.
I did find something strange during HDR mode. The brightness in the sky is flickering, see short video below.