So far I've found this video to best demonstrate the contrast difference:
If it doesn't say HDR instead of 4K on the bottom, you're not seeing it in HDR. If you're on Monterey 12.1, you still have to change your user agent in Safari.
Menu bar-> Safari->Preferences->Advanced->Show Develop in Menu Bar
Menu bar-> Develop -> User Agent -> Google Chrome / Windows (Has to be Windows, the MacOS agent still doesn't give HDR) -> Proceed to sear retinas
You can even toggle it on and off to go back and forth between HDR and non HDR
Enjoy! Feel free to post other cool HDR videos in here
If it doesn't say HDR instead of 4K on the bottom, you're not seeing it in HDR. If you're on Monterey 12.1, you still have to change your user agent in Safari.
Menu bar-> Safari->Preferences->Advanced->Show Develop in Menu Bar
Menu bar-> Develop -> User Agent -> Google Chrome / Windows (Has to be Windows, the MacOS agent still doesn't give HDR) -> Proceed to sear retinas
You can even toggle it on and off to go back and forth between HDR and non HDR
Enjoy! Feel free to post other cool HDR videos in here