We haven't had a chance to fully test this product yet, but we've assembled this helpful overview of relevant information on it.

From Sony’s Bravia line of televisions comes the KDL-40EX620. This version is a 40″ LED-LCD television capable of showing Full-HD 1080p images. Sony uses technology like the X-Reality engine and Motion Flow 120 to smooth out the images even more to ensure the best picture, supposedly. This television has a weird motion sensor thing in it. At first scan of no movement it turns off the picture but it leaves the sound on, later it will scan again and if there is still no movement it shuts itself off. You can connect the 40EX620 to the internet either through the ethernet port or using its Wifi capbilities. This lets you access Skype, DLNA streaming, internet streaming apps like Netflix, Pandora and Hulu Plus. There are four HDMI ports and two USB ports so connect up.

Features List:

– 40 inch LED-LCD screen

– Full-HD 1080p

– X-reality engine, Motion Flow 120

– Motion sensor shut down

– Internet ready

– Skype ready

– 4 HDMI ports

– 2 USB ports

Digital Trend’s TV Buying Tips:

LCD or Plasma?

Debating between LCD or plasma can almost get as subjective as debating between chocolate and vanilla. But unlike the never-ending ice cream debate, there actually is a superior TV choice, depending on how you plan to use it.

Check out some of our previous guides on the subject to get a better look, but in short, plasmas use more electricity, come in bigger sizes, have deeper blacks, don’t suffer from motion blur, and offer an unlimited viewing angle that’s best for off-axis viewing. LCDs are more energy-efficient, have fewer problems with glare due to their matte screens, can hold an image for hours or days without suffering “burn-in,” and generally look brighter.

After deciding which format to go with, our LCD and Plasma HDTV buying guides can help you with more questions specific to your type of TV.

How large of a screen do I really need?

“Bigger is better” doesn’t make any more sense when choosing an HDTV for your living room than when choosing a couch for your living room. A lot of factors come into play. As a general rule, consider a TV 1.5 to 3.0 times the screen size. For instance, a 32-inch television might make sense for viewing distances as close as four feet away, and as far as eight feet away. Check out our guide to choosing the right size HDTV for more details, including a helpful chart.

What is a LED backlighting?

Traditionally, LCD TVs have used compact fluorescent (CFL) tubes placed behind an LCD panel to provide the backlighting that literally lights up the screen. More modern LED TVs replace these tubes with clusters of light emitting diodes – LEDs.

When LEDs are placed at the edges of the screen, as CFL tubes traditionally were, TVs can be made significantly thinner, and LEDs use less power than fluorescents. The most inexpensive LED-lit HDTVs take this approach.

However, the biggest advantage to using LEDs is realized when they light the screen in a grid from behind. Sophisticated electronics vary the intensity of every LED in accordance with action on the screen, making dark areas of the image darker, and bright areas brighter. This effectively increases the contrast ratio compared to uniform lighting. Although it also increases costs, many people believe this type of LCD is the first to truly rival plasma on black levels.

Read more about LED backlighting and the differences between both techniques in our guide to understanding LED backlighting.

Should I worry about viewing angle?

Absolutely. All LCDs will distort when viewed from extreme angles, but the degree of distortion and the angle it starts to occur at varies from TV to TV. If you plan to pack a dozen people in front of a single TV for entertaining, viewing angle will make a huge difference for the unlucky few who get scattered off to the sides. Most manufacturers will state viewing angle in degrees (for instance, 160) in the specifications for a TV, but be warned: methods for measuring this very subjective figure vary, and we can guarantee most companies opt for the most generous figures. When possible, try to evaluate it yourself in person, or read hands-on reviews that can offer anecdotal evidence, rather than relying on easily-manipulated numbers.

Do I need a 120Hz set? What about 240Hz?

This popular LCD TV-based technology helps reduce motion blur. Pronounced “120 hertz,” 120Hz technology essentially doubles the speed at which frames are displayed, from 60 frames per second to 120 frames per second, resulting in a clearer moving image, especially in fast-action video sequences.

Since the screen can display more frames than a movie actually has, many TVs will artificially generate in-between frames where they don’t exist to make motion look smoother. Some people find the look more fluid, while some people think it looks artificial and odd. Fortunately, all TVs that offer it also offer an option to turn it off, if you don’t like it. We recommend testing it in person to see the effects for yourself before deciding whether or not you should pay extra.

Check out our article 120Hz and 240Hz Refresh Rates Explained for more on motion smoothing.

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