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Introduction
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01.Tour & Design
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02.Blacks & Whites
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03.Color Accuracy
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04.Motion
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05.Viewing Effects
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06.Calibration
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07.Connectivity
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08.Remote Control
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09.Audio & Menus
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10.Multimedia & Internet
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11.Power Consumption
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12.Sharp LC-40LE700UN
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13.Samsung LN40C630
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14.Panasonic TC-P42S2
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15.Conclusion
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16.Series Comparison
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17.Photo Gallery
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18.Ratings & Specs
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19.Comments
Toshiba 40G300U
Previous: Page 2
Blacks & WhitesNext: Page 4
MotionColor Accuracy
Decent color curves. Trouble maintaining a consistent color temperature.
Color Temperature (5.29)
The Toshiba 40G300U had some troubles maintaining a consistent color temperature. As you can see from the chart below, when the signal starts to get darker, the color temperature becomes noticeably warmer. It’s hard to say what type of movie or TV scene would bring this out the most, but it’s likely something where you’d see a long gradation of shadows. Don’t be surprised if the shadows start to get a little reddish. More on how we test color temperature.
| Read Reviews of Comparison Products | ||
|---|---|---|
 Sharp Aquos LC-40LE700UN |
 Samsung LN40C630 |
 Panasonic Viera TC-P42S2 |
RGB Curves (7.76)
The Toshiba 40G300U’s RGB color curve performance highlighted the TV’s tendencies towards less than perfect color transitions. Sure, the curves are smooth overall, but if you look closely, you can see dozens of little steps in the lines, indicating that the TV is actually skipping over a lot of the values, combining two or three different values into identical shades.
Fortunately, there aren’t any huge anomalies in the performance. Instead, it’s just lots of tiny, overlooked values. Overall, we like the shape of the curve. We’ve seen better, but we’ve seen far worse. More on how we test RGB curves.
The strips below are digital recreations of the color curve chart above, compared with an ideal curve and the results from three similar TVs.
| Red Response Comparison | |
|---|---|
| Ideal Response |  |
| Toshiba 40G300U |  |
| Sharp Aquos LC-40LE700UN |  |
| Samsung LN40C630 |  |
| Panasonic Viera TC-P42S2 |  |
| Green Response Comparisons | |
|---|---|
| Ideal Response |  |
| Toshiba 40G300U |  |
| Sharp Aquos LC-40LE700UN |  |
| Samsung LN40C630 |  |
| Panasonic Viera TC-P42S2 |  |
| Blue Response Comparisons | |
|---|---|
| Ideal Response |  |
| Toshiba 40G300U |  |
| Sharp Aquos LC-40LE700UN |  |
| Samsung LN40C630 |  |
| Panasonic Viera TC-P42S2 |  |
Color Gamut (4.77)
The Toshiba 40G300U did not match up all that well to the well to the rec. 709 color standard, but most TVs don’t. The red point was nearly perfect, but the green and blue points The white point – those circles in the middle – were fairly close, but the Toshiba 40G300U was a touch greener than ideal. More on how we test peak color gamut.
The table below contains all the numeric details of the Toshiba 40G300U’s color gamut performance, compared to the rec. 709 standards.
| Rec. 709 versus Toshiba 40G300U | |||
|---|---|---|---|
| u' (rec.709/measured) | v' (rec.709/measured) | Error | |
| Red | 0.4507 / 0.4501 | 0.5229 / 0.5225 | 0.00072111 |
| Green | 0.125 / 0.1158 | 0.5625 / 0.1158 | 0.009208692 |
| Blue | 0.1754 / 0.1786 | 0.1579 / 0.1386 | 0.019563486 |
| D65 (White) | 0.1978 / 0.1924 | 0.4683 / 0.4611 | 0.009 |
| 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. |
Shop for the Toshiba 40G300U
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