televisions

Sharp Aquos LC-40LE810UN LED LCD HDTV

40 in.

A 40-inch TV with a zany twist: yellow pixels. With a modest cost and Netflix streaming, we really wanted to like it.

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Black Level

The black level was quite weak at 0.14 cd/m2, but not so weak as to be problematic. This relatively bright black might detract from a great contrast, but it will probably not be distracting. Additionally, on all-black screens, the Sharp LC-40LE810UN auto-dims the backlight. We find it frustrating to not be able to turn the feature off entirely, but it is a subtle fade. More on how we test black level.

Black Level Chart

Peak Brightness

A luminance of 312.39 cd/m2 is bright enough for most purposes. This bright white should contribute to a good contrast ratio, and is unlikely to be washed out by ambient light. More on how we test peak brightness.

Peak Brightness Chart

Contrast

The contrast ratio of 2,200 is good, but not great. It is more than acceptable for optimal viewing straight-on in a dark room, but may be reduced by ambient lighting or a wide viewing angle. More on how we test contrast.

Contrast Chart

Tunnel Contrast

LCDs very rarely have a problem with our tunnel contrast test, in which we measure the luminance of a shrinking black rectangle surrounded by brightest white. The Sharp LC-40LE810UN was not really exception, retaining a dark black level even for very small areas. The erratic nature of this graph is actually a bit unusual, but it still doesn't demonstrate a concerning trend. More on how we test tunnel contrast.

Tunnel Contrast Chart

White Falloff

The white falloff test is the same as tunnel contrast, but the shrinking box is white on black. As with tunnel contrast, an LCD should not have a problem with high contrast in small areas. The Sharp LC-40LE810UN performed as expected, so it should be capable of high contrast complexities, like the dark silhouette of a tree against a white sky in winter. More on how we test white falloff.

White Falloff Chart

Uniformity

The screen uniformity of the Sharp LC-40LE810UN was not bad, especially for an edge-lit TV. It's difficult to project light uniformly all the way to the center of the screen when the LEDs are placed only at its edges for a thin profile. This Sharp's major problem was flashlighting in the corners of a black picture, which led to blotchiness at the edges, but not center, of the screen. The center was quite uniform, and a white screen exhibited only the faintest dimming at its edges. If you watch from too close, you might notice a strip of green at the top of a white screen, and some purple at the bottom. So listen to your mom and sit back a little for optimum screen performance. More on how we test white falloff.

Greyscale Gamma

An ideal gamma slope is between 2.1 and 2.2, so the Sharp LC-40LE810UN's slope of 2.9 is a bit steep. It's not too bad, though, because it forms a smooth, straight line for the most part. Greyscale gamma is a measurement of the smoothness of transition from black to white, between each shade of grey. A straight line means the change is smooth and uniform. The slight sag at the base of the slope indicates that the darker shades of grey are pulled down into black, but it's not so severe as to be a serious problem. If you lose shadow detail, it will likely be minor. More on how we test greyscale gamma.

Greyscale Gamma Chart
Our editors review and recommend products to help you buy the stuff you need. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. Our picks and opinions are independent from any business incentives.

Sections

  1. Introduction
  2. Tour & Design
  3. Blacks & Whites
  4. Color Accuracy
  5. Motion
  6. Viewing Effects
  7. Calibration
  8. Connectivity
  9. Audio & Menus
  10. Multimedia & Internet
  11. Power Consumption
  12. Panasonic Viera TC-L42U30 Comparison
  13. Sony Bravia KDL-40EX400 Comparison
  14. LG 37LK450 Comparison
  15. Conclusion
  16. Series Comparison
  17. Photo Gallery
  18. Ratings & Specs
Our editors review and recommend products to help you buy the stuff you need. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. Our picks and opinions are independent from any business incentives.
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Our editors review and recommend products to help you buy the stuff you need. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. Our picks and opinions are independent from any business incentives.
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