You lose the high-dynamic range (HDR) and IMAX aspect ratio shifts that define the visual experience. 🎬 Why You Should Watch the Official Version
I can give you a direct link to the highest-quality version available to you. Watch TENET (2020) HDRip AC3
Available in 4K Ultra HD on Amazon Prime , Apple TV , and YouTube . You lose the high-dynamic range (HDR) and IMAX