Indeed, and contrary to what you think, the white balance is not recorded directly in the exifs. It doesn’t matter if x or y scale is used, what matters is that what is taken from the raw file during demosaicing is similar in terms of color. For example as shown above, the colorimetry between the raw and the dng opened in ACR is visually identical while the values are different. If I start from the linear dng produced by PureRAW (or PL6), the values are ACR (PS, LR):īut these differences are almost irrelevant, since in practice the result compared is very close if not identical. Do not look for identical values between the camera, and what the dematrixer x or y displays! The third-party software knows how to retrieve the values from the raw file data, and transpose them into its own system.įor example, for the color temperature of your image which I suppose is set in the camera to 6300 K, (if I believe the title of the file, but we do not know the value of the tint), we find in correspondence the values temperature and tint of the raw file: Like each camera manufacturer, and each demosaicing software publisher uses its own white balance scale. There is absolutely no reason to assert that the true value of WB is that of the manufacturer: it is his and everything is fine as long as we stay in his ecosystem: camera + internal demosaicing + demosaicing with his software provided. In the camera, the white balance that is defined (whether manual or auto) is only used for one thing: to display correctly (but not necessarily exactly) on the screen/viewfinder, and to take out a jpeg camera if this option has been chosen. Which is able to restore during demosaicing, to a certain extent, all of the possible combinations of white balance.
The sensor does not record according to a given white balance, it records in its own color space. The only WB indication present is of the “Auto, Custom” type.
It may sound strange, but it is the reality. Regarding the white balance, it should be understood that there is no absolute scale of values with regard to digital photography. I have another image that has red blossoms in it trying to fix the greens with WB turns the blossoms magenta. Monkeying with the white balance can help you correct the greens, but at the expense of making something else worse. I don’t know about PL6, but when you load the image into ACR it does not identify 6300K as the temperature, even though that temp is in the exif it picks Adobe’s equivalent temp+tint, because they want to go their own way. Interpretation of what white balance is correct when you only have the image to look at is complicated by the lies we’re told by software.
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