projectors

AAXA Technologies P4 Pico Projector Review

March 29, 2012
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Color Temperature

The color temperature we recorded oscillates between too warm and too cool, showing cooling errors in the middle of the brightness spectrum, and warming errors at the dark end of the spectrum. Right in the middle of the spectrum, where most images exist, there is a perceivable cooling that will result in a blueish tint to pictures. At the darkest end of the spectrum, the color temperature strays warm, and will show some orange tinting, although the luminance at this end is too dim to show much of anything.

All things considered, these errors are slight, you may notice some of the blueish tint in the middle values, but it will not be so obvious.

Color Temperature
Color Temperature Graph

RGB Curves

The shape of these curves is about right, but they lack smoothness. All that movement in the green and blue lines means that these colors are inaccurately reproduced all the way from darkest to brightest. A good example is to look at the final green point on the right side of the graph. This should be the brightest data point recorded, shown as the closest point to 100% on the Y-axis. You can see that it falls far below several points before it. Now, extrapolate this throughout the spectrum, for both green and blue, and you can see how the up and down movement of these graphs means poor color quality.

RGB Curves
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Color Gamut

We recorded the primary colors and matched them against the Rec. 709, the international standard for HD colors. The black triangle in the graph below represents the colors we recorded and you can see that all three colors are highly undersaturated compared to the standard. Not only will the colors not transition well from bright to dark, as we learned in the previous section, but the are also very dull.

Further, the white point is highly skewed towards blue. The white values will not have that brilliant pure whiteness to them, rather colored slightly cyan.

Color Gamut
Color Gamut Graph

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Sections

  1. Introduction
  2. Tour & Design
  3. Blacks & Whites
  4. Color Accuracy
  5. Motion
  6. Viewing Effects
  7. Calibration
  8. Connectivity & Media
  9. Power, Noise & Heat
  10. Optoma Pico PK320 Comparison
  11. Aiptek PocketCinema V50 Comparison
  12. 3M MP225A Comparison
  13. Conclusion
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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