HDR

Tech 11 Sep 2026 9 min read

What Local Dimming Changes on LCD TVs and Monitors

A dark movie scene can expose a basic limitation of an LCD screen. The picture may show a bright lamp against a black night sky, yet the supposedly black parts look grey. On another LCD, the same scene can have much deeper dark areas while the lamp stays bright. One feature that can create this difference is local dimming. Instead of running the entire backlight at one brightness, a local-dimming LCD can reduce the light behind dark parts of the picture while keeping other areas brighter. This can improve contrast, especially in high dynamic range (HDR) video, but the result depends heavily on the backlight design and the system that controls it.

Displays LCD

Tech 07 Sep 2026 7 min read

Why a Screenshot Can Look Different From Your Screen

You take a screenshot because you want to preserve exactly what is on the screen. Yet the saved image can look brighter, duller, warmer, or less vivid when you open it later or send it to someone else. That does not necessarily mean the screenshot failed. A screenshot usually captures image data produced by the device, while what your eyes see is that data after a physical display and its settings have turned it into light. Those are related, but they are not the same thing.

Displays Screenshots

Tech 03 Sep 2026 8 min read

What HDR Means on Screens and When It Makes a Visible Difference

A screen labelled HDR may promise brighter highlights, richer colours, and more realistic images. Yet turning on HDR does not automatically make every photo, game, or video look better. HDR stands for high dynamic range. In display use, the basic idea is to reproduce a wider range between dark and bright parts of an image while preserving useful detail across that range. Good HDR can make sunlight, reflections, lamps, and other highlights look more intense without forcing the rest of the picture to become equally bright.

Displays HDR