What is DCR on a monitor and how does it work?

[varegames]

I’ve been seeing the term DCR on a monitor in specifications and I’m a bit confused about what it actually does. From what I understand, it adjusts brightness dynamically, but I’m not sure how useful it is in real usage. Does it really improve picture quality or is it just a marketing feature? Any simple explanation would help.

 

[Arabapbo]

DCR (Dynamic Contrast Ratio) is the feature that automatically adjusts the backlight intensity based on the screen content, making the dark scenes look deeper and the high-light scenes look brighter.