televisions

Sony KDL-40S5100 LCD HDTV Review

40 in.

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Color Accuracy

Color Accuracy Summary
{{article.attachments['Sony-KDL-40S5100-vanity.jpg']}} • Stable color temperature • Loss of detail with bright blues • Testing done using DisplayMate Software
{{article.attachments['tvi-prev.jpg']}} Blacks & Whites Page 4 of 18 Motion {{article.attachments['tvi-next.jpg']}}

Color Temperature*(9.89)*


Like anything that emits light a television's light has a certain color temperature. More important than the particular color temperature, which most televisions let you adjust to your tastes, is how consistent that color temperature is across the greyscale. Inconsistencies can cause some content to have a blue or yellow cast in certain situations. Thankfully this isn't a concern with the Sony KDL-40S5100, which had a rock solid color temperature across the greyscale, as you can see from the chart below.

Color Temperature
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RGB Curves*(7.16)*


All the colors on your HDTV are created by mixing the three primary colors red, green and blue. In this test we look at the accuracy of these three colors. Below you can see a graph of the Sony KDL-40S5100's color performance.

RGB Curves
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You can see that the Sony KDL-40S5100's color curves are generally smooth and concave, which is what we want to see. There is a slight notch in the red curve, which is of some concern. What is of even more concern is what happens at higher intensities with blues on the KDL-40S5100. You can see that the graph of blue stops rising at around intensity 221. What this means is that above that intensity level the KDL-40S5100 isn't able to show any differences in blues. This is called peaking and means that you're going to lose some detail with bright colors, especially blues. Thankfully blue is the color that our eyes are least sensitive to, but this is still a problem. Below you can see how the Sony KDL-40S5100 performed against ideal colors and three comparison televisions.

 

Red Response Comparisons
Ideal Response {{article.attachments['Ideal-Response-redstrip.jpg']}}
Sony KDL-40S5100 {{article.attachments['Sony-KDL-40S5100-redstrip.jpg']}}
Samsung LN40B650 {{article.attachments['Samsung-LN40B650-redstrip.jpg']}}
Vizio SV471XVT {{article.attachments['VIZIO-SV471XVT-redstrip.jpg']}}
JVC LT-42P300 {{article.attachments['JVC-LT-42P300-redstrip.jpg']}}

 

Green Response Comparisons
Ideal Response {{article.attachments['Ideal-Response-greenstrip.jpg']}}
Sony KDL-40S5100 {{article.attachments['Sony-KDL-40S5100-greenstrip.jpg']}}
Samsung LN40B650 {{article.attachments['Samsung-LN40B650-greenstrip.jpg']}}
Vizio SV471XVT {{article.attachments['VIZIO-SV471XVT-greenstrip.jpg']}}
JVC LT-42P300 {{article.attachments['JVC-LT-42P300-greenstrip.jpg']}}

 

Blue Response Comparisons
Ideal Response {{article.attachments['Ideal-Response-bluestrip.jpg']}}
Sony KDL-40S5100 {{article.attachments['Sony-KDL-40S5100-bluestrip.jpg']}}
Samsung LN40B650 {{article.attachments['Samsung-LN40B650-bluestrip.jpg']}}
Vizio SV471XVT {{article.attachments['VIZIO-SV471XVT-bluestrip.jpg']}}
JVC LT-42P300 {{article.attachments['JVC-LT-42P300-bluestrip.jpg']}}

 

Color Gamut*(5.01)*


The color gamut is the specific set of color coordinates that define how each color is supposed to look. There are a variety of different color gamuts, but all HDTVs are supposed to adhere to an international standard known as ITU Rec.709. This standard ensures that the colors you see on your television look the way the content produces intended them. Below you can see a graph of the Sony KDL-40S5100's measured color gamut versus this international standard.

Color Gamut
{{article.attachments['Sony-KDL-40S5100-colorgamut.jpg']}}

You can see that the Sony KDL-40S5100 has problems with both greens and blues. What this means is that those colors won't look quite the way they were intended to on this television. For those geeky enough to care you can see the exact measured coordinates in the table below.

  u' (rec.709/measured) v' (rec.709/measured) Error
Red 0.4507 / 0.4497 0.5229 / 0.5225 0.0011
Green 0.125 / 0.1143 0.5625 / 0.5622 0.0107
Blue 0.1754 / 0.1754 0.1579 / 0.1579 0.0158
D65 (white point) 0.1978 / 0.1978 0.4683 / 0.4634 0.0069

 

Compare the Sony KDL-40S5100 to other HDTVs
{{article.attachments['Samsung-LN40B650-vanity.jpg']}} {{article.attachments['VIZIO-SV471XVT-vanity.jpg']}} {{article.attachments['JVC-LT-42P300-vanity.jpg']}}
Samsung LN40B650 40 inches Vizio SV471XVT 47 inches JVC LT-42P300 42 inches
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. Remote Control
  9. Connectivity
  10. Audio & Menus
  11. Formats & Media
  12. Power Consumption
  13. Vs Samsung LN40B650
  14. Vs Vizio SV471XVT
  15. Vs JVC LT42P300
  16. Conclusion
  17. Series Comparison
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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