Update 07/16/2019: Text updated to clarify settings.

The full array local dimming feature is extremely effective at dimming dark areas on the screen and is one of the best we've ever seen. It reacts quickly to fast scene changes, but can't always keep up, and it tends to dim the outside edges of bright, fast-moving objects, which can be noticeable in some scenes.

There is noticeably less blooming around bright objects than last year's model. There can still be some noticeable blooming around subtitles in dark scenes though, as well as around very bright objects in dark scenes, but it's better than previous models.

If you enjoy local dimming and don't mind some variation in screen brightness or blooming, then set local dimming to 'Medium'. This does increase the overall brightness of the image, though, and can result in distracting blooming around bright objects. If you prefer a less aggressive local dimming implementation or find the brightness too high after decreasing the 'Backlight' then set it to 'Low', or disable local dimming completely if you don't like the changes in brightness.

The setting that controls the backlight is known as Active Full Array. During testing, we discovered that adjusting this setting sometimes caused the Black Frame Insertion feature to be disabled.

Note: The 75" model has more dimming zones, and we expect the local dimming feature to perform slightly better.