Orange and Yellow – the Foveons Perceive these Colors differently than I do


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When I tested the „pre-Merrill“ SD1, I realized that its sensor perceives the colors mentioned in the title more greenish than I do. As I later found out, this is partly due to the automatic white balance, which tends to have a green cast with the SD1, SD1M and DP2M. But even if the white balance is 100% correct, which is considerably more often the case with the DP3M and DP2Q, both colors are shown in a greenish way. This either means that Foveons of the last two generations “see” these colors differently due to their hardware, or the software (JPF-Engine/SPP) interprets the data from the three layers accordingly. Be that as it may, since there is no possibility of editing individual colors in SPP, you have to fall back on Lightroom after having exported the X3Fs as 16 bit TIFFs from SPP. Fortunately, the deviation is relatively constant, which makes the solution relatively easy. In most cases it suffices to adjust the hue of the color yellow to -25. In extreme cases, as with the following Pekinese, only -45 for yellow and +5 for orange lead to the desired result.

Sigma DP2 Quattro (volle Auflösung - full resolution)

LR_Orange_Gelb_Farbton
For comparison, the same photo, with default values for yellow/orange:

DP2Q0869__

The remaining photos didn’t require any adjustments of hue.
Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)Sigma DP2 Quattro (volle Auflösung - full resolution)

You can find more of my DP2Q shots on Pinterest and Flickr.

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2 thoughts on “Orange and Yellow – the Foveons Perceive these Colors differently than I do

  1. Hi!

    I found this article very interesting.
    A also found that the dp3 merrill has excessive yellows and tried your advice. It is better than without, but I find it to be even better when adjusting the saturation some -25 and hue -5-10 only for the yellow color.
    Try it out, maybe you will agree (I see you sold the merrill and kept the quattro, not sure if that has the same problem)
    Best regards!

    • Hi!

      I found this article very interesting.
      A also found that the dp3 merrill has excessive yellows and tried your advice. It is better than without, but I find it to be even better when adjusting the saturation some -25 and hue -5-10 only for the yellow color.
      Try it out, maybe you will agree (I see you sold the merrill and kept the quattro, not sure if that has the same problem)
      Best regards!

      Thanks László! I will give it a try. I sold the DP2 Merrill, and kept the DP2 Quattro and the DP3 Merrill. The Quattro has better color rendition, but it is still not perfect.

      Best regards!

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