Toshiba 40G300U

Black Level (8.48)

The black level of the Toshiba 40G300U produced a good black level, compared to the similar LCD televisions we’ve pulled in for comparison. In fact, it was even slightly better than the plasma Panasonic TC-P42S2 (based on our calibrated settings, which put more emphasis on color performance than contrast). More on how we test black level.

Read Reviews of Comparison Products
Sharp Aquos LC-40LE700UN	Samsung LN40C630	Panasonic Viera TC-P42S2

Peak Brightness (8.11)

The Toshiba 40G300U’s peak brightness was not quite as bright as the Samsung LN40C630, but it was much brighter than the Sharp LC-40LE700. It’s understandable that the Panasonic TC-P42S2, as a plasma, was not as bright as the three LCD TVs. More on how we test peak brightness.

Contrast (8.37)

The Toshiba 40G300U produced a strong contrast ratio of 3533:1, which is trumped here only by the Samsung LN40C630. Due to the good performance in both black level and peak brightness, you can be sure that the Toshiba will deliver on contrast. More on how we test contrast.

Tunnel Contrast (9.40)

The Toshiba 40G300U showed some minor problems with maintaining a consistent black level. What we’re looking for in the chart below is a straight, smooth line. The jagginess does not show a trend line, so we’re not foreseeing the same sorts of problems common to plasmas. We can only guess that the Toshiba 40G300U simply doesn’t have the best processing and display properties. More on how we test tunnel contrast.

White Falloff (9.96)

The Toshiba 40G300U has no problems with maintaining a consistent peak brightness, no matter how much or how little of the screen is covered by white. More on how we test white falloff.

Uniformity (6.00)

The Toshiba 40G300U exhibits some problems with maintaining a uniform black, white, or monochromatic screen. You can definitely see blotches of brightness on darker screens, which could kill some of the effect in dark, noir-ish or horror movies, where an even black level is key. More on how we test white falloff.

Greyscale Gamma (5.15)

The greyscale gamma test indicates how well a TV transitions from black to white. First, we look at the smoothness of the curve. The upper portion looks fine, but those squiggles towards the bottom-left indicate that the TV may have problems with shadow details. There’s also the slope of the line. An ideal slope is somewhere between 2.1 and 2.2. The Toshiba 40G300U’s gamma curve of 3.01 is too steep, so it’s probably failing to display some of the finer details the the greyscale gamut. More on how we test greyscale gamma.

Other Models in the G300 Series
For more information on other models in this series, check our Series Comparison Page.
Toshiba 46G300U 46 in.	Toshiba 55G300U 55 in.