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<blockquote data-quote="J-see" data-source="post: 398456" data-attributes="member: 31330">I've been looking into this some more and still can't find a decent explanation for the rather drastic temperature difference between 100 and 400 ISO. One could assume that if auto-WB is applied depending the values of the captured shot, the 400 being 2 stops &quot;brighter&quot; than the 100 would be processed warmer. Yet strangely it is the more exposed that is cooled down to 3.5k while the least exposed is processed with a daylight temperature.The cool blue/purple 400 ISO is closest to what I observed before taking the shot. One could say that matches reality. However, and now it gets really funky, there is such a thing like the Purkinje effect; during low illumination the sensitivity of the human eye shifts towards the blue end of the color spectrum.So either the 400 is correct because it matches what I observed, or the 100 is correct because it matches what was truly there to be observed. In the end, I will never know which of both is accurate.Ain't that funny.</blockquote>

[QUOTE="J-see, post: 398456, member: 31330"] I've been looking into this some more and still can't find a decent explanation for the rather drastic temperature difference between 100 and 400 ISO. One could assume that if auto-WB is applied depending the values of the captured shot, the 400 being 2 stops "brighter" than the 100 would be processed warmer. Yet strangely it is the more exposed that is cooled down to 3.5k while the least exposed is processed with a daylight temperature. The cool blue/purple 400 ISO is closest to what I observed before taking the shot. One could say that matches reality. However, and now it gets really funky, there is such a thing like the Purkinje effect; during low illumination the sensitivity of the human eye shifts towards the blue end of the color spectrum. So either the 400 is correct because it matches what I observed, or the 100 is correct because it matches what was truly there to be observed. In the end, I will never know which of both is accurate. Ain't that funny. [/QUOTE]

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