Difference Between Hdr And Sdr

Hello evryone today i wanted to share with you the difference between Hdr and Sdr.
HDR and SDR are wildly different in terms of gamut and colour mapping. You get a greater benefit from brightness being very high, which mobile phones can't produce at the moment. So an uneducated person may think SDR and HDR are the same because of that. But side-by-side comparison of a phone with it on and off is crazy to see, even on a 5" screen.