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<blockquote data-quote="Horoscope Fish" data-source="post: 635961" data-attributes="member: 13090">I think the issue lies with AWB. Auto White Balance, as I understand it, works by way of sophisticated algorithms which look at the entire scene in the frame. It has to make some basic assumptions and the first one is that the scene should be color-neutral. I suspect AWB may tap into the camera's internal database of stored images as well, too help determine what sort of scene it's looking at, much like it does to adjust exposure when using the Matrix metering mode; but that's just my hypothesis. Anyway... By computing the average color in the scene, and applying the same correction to every pixel, the result should be a frame wherein the average color is neutral; which should mean correct white-balance. And it normally does. AWB is not fool-proof however and certain circumstances can fool it into making bad choices. For instance, when there is a single color dominating the frame, AWB &quot;sees&quot; too much of that particular color, mistakes it for a color-cast, and then tries to correct for it, which of course affects the entire shot. I have a feeling this might be at the heart of the issue here.</blockquote>

[QUOTE="Horoscope Fish, post: 635961, member: 13090"] I think the issue lies with AWB. Auto White Balance, as I understand it, works by way of sophisticated algorithms which look at the entire scene in the frame. It has to make some basic assumptions and the first one is that the scene should be color-neutral. I suspect AWB may tap into the camera's internal database of stored images as well, too help determine what sort of scene it's looking at, much like it does to adjust exposure when using the Matrix metering mode; but that's just my hypothesis. Anyway... By computing the average color in the scene, and applying the same correction to every pixel, the result [I]should[/I] be a frame wherein the average color is neutral; which [I]should[/I] mean correct white-balance. And it normally does. AWB is not fool-proof however and certain circumstances can fool it into making bad choices. For instance, when there is a single color dominating the frame, AWB "sees" too much of that particular color, mistakes it for a color-cast, and then tries to correct for it, which of course affects the entire shot. I have a feeling this might be at the heart of the issue here. [/QUOTE]

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