I am kinda new to HDR, bought the Sony 900E back in November. I just have some curious question in general and about HDR and Sony. The 900E obviously is 4K and HDR 10, but no Dolby Vision. HDR 10 looks amazing with 4K Blu-ray, looks good with Netflix. How does plain HDR 10 compare to HDR 10 with Extended dynamic range that Sony has? I have turned it off before on my 900E and the picture extremely dark. How does Extended dynamic range work with or interact with HDR? Maybe I'm asking dumb questions, I'm just curious. Thanks for any info.