UN40D6400UF Review

Our UN40D6400UF review has three main points: First, we have to note that the UND6400UF’s glossy screen is the second-worst in our lineup. Secondly, it costs more to run than its 2010 Samsung competitor, and thirdly, it lacks local dimming.

It costs more to operate than the 2010 Samsung equivalent

Samsung’s October-December operating profit of 5.3 trillion won topped its previous record of 5 trillion won set in the second quarter of 2010. This year, Samsung plans to spend an additional nine percent of its profits to 25 trillion won, which will be nearly the equivalent of the GDP of the Ivory Coast, the world’s largest cocoa producer. Half of the investment will go to its chips division and the other half will go to flat screens and new overseas production capacity. The company will also expand its research and development centers. These new investments dwarf the combined investment of leading Japanese technology companies.

Samsung’s new Galaxy S line is a flagship phone that was introduced in 2010. The phone was the first Android phone and a formidable competitor to the Apple iPhone 3G. Its slim design and powerful internal components helped it to dominate the market and sell over 25 million units. Samsung has entered dozens of markets and is now a major player in televisions, cell phones, and LED lighting.

It doesn’t have local dimming

LCD televisions employ polarizers to block out unwanted light, but some still makes it through. Local dimming helps reduce this, which improves contrast ratios and picture quality. The QLED range from Samsung is a good example of a TV that uses local dimming. However, it is expensive.

In contrast, OLED TVs use self-emitting pixels, which have no backlight. While local dimming does not work on OLEDs, the technology works just fine without it. Bright areas aren’t overly saturated, and dark areas don’t bloom.

Local dimming can also be used to improve HDR images. TVs that support local dimming improve image quality by boosting the space between the brightest and darkest point on the screen. A TV with local dimming will have bright highlights and a dark center, which helps make bright objects stand out more.

Edge-lit local dimming works similarly to local dimming, but is much less effective. While it improves contrast, it tends to increase brightness in one area while reducing contrast elsewhere. Some LED TVs have light sources behind their panels to help with local dimming.

Local dimming is also more expensive than edge-lit local dimming, and there are other issues with it. Besides being more expensive, it requires thicker panels and more LEDs. This makes it less energy-efficient than edge-lit local dimming. Then again, edge-lit panels often look better with local dimming.

In general, local dimming improves the contrast ratio in dark scenes and makes the whole picture look better. It helps to enhance the picture quality, and it’s particularly useful when watching HDR content. It also helps to make the blacks of LCD screens closer to OLED levels.

Local dimming can be used in combination with Micro Dimming, which uses software to analyze the picture and adjust the panel’s brightness in areas of the picture that are darker. Samsung’s LED 8000 has Micro Dimming Plus. This feature is not useful for all scenes.

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