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<blockquote data-quote="WayneF" data-source="post: 280750" data-attributes="member: 12496">It can be corrected, but you need some known white thing in the scene to use the WB tool.&nbsp; Clicking WB on that white shoulder strap is close, but I think not quite exact (try it).&nbsp;&nbsp; Clicking a Known white thing says &quot;Computer, I know this is white.&nbsp; Make it be white&quot;, and it removes whatever color cast is there (from the entire image).&nbsp;&nbsp; When a white thing is white, that is perfect WB.&nbsp; If it really was not quite white, result will be off a bit (but maybe still better?)Or you can simply adjust it by eye to be pleasing, by sliding the sliders.&nbsp; This becomes arbitrary, but pleasing.Because the high ISO fully captures the weak incandescent, which is orange, so we see the orange.&nbsp;&nbsp; Auto ISO sets up all settings (including ISO) to properly capture what the light meter sees, which is 100% ambient... and incandescent is orange.Then automatic TTL BL sets the flash power level to work into that setting, as weaker fill flash, not as main light.&nbsp;&nbsp; The ambient incandescent is the main light.Snap off one test picture, flash or sunlight, but using Incandescent WB.&nbsp;&nbsp; Or just click Tungsten WB in Raw on such a flash or sunlight picture.&nbsp;&nbsp; See?&nbsp; It is blue, because it removed expected orange.Our human brain hides it from us, but it is orange in a picture.Low ISO shuts out the weak ambient, underexposes and ignores the weak ambient, and only the stronger white flash contributes light into the picture.&nbsp; &nbsp; Not orange.</blockquote>

[QUOTE="WayneF, post: 280750, member: 12496"] It can be corrected, but you need some known white thing in the scene to use the WB tool. Clicking WB on that white shoulder strap is close, but I think not quite exact (try it). Clicking a Known white thing says "Computer, I know this is white. Make it be white", and it removes whatever color cast is there (from the entire image). When a white thing is white, that is perfect WB. If it really was not quite white, result will be off a bit (but maybe still better?) Or you can simply adjust it by eye to be pleasing, by sliding the sliders. This becomes arbitrary, but pleasing. Because the high ISO fully captures the weak incandescent, which is orange, so we see the orange. Auto ISO sets up all settings (including ISO) to properly capture what the light meter sees, which is 100% ambient... and incandescent is orange. Then automatic TTL BL sets the flash power level to work into that setting, as weaker fill flash, not as main light. The ambient incandescent is the main light. Snap off one test picture, flash or sunlight, but using Incandescent WB. Or just click Tungsten WB in Raw on such a flash or sunlight picture. See? It is blue, because it removed expected orange. Our human brain hides it from us, but it is orange in a picture. Low ISO shuts out the weak ambient, underexposes and ignores the weak ambient, and only the stronger white flash contributes light into the picture. Not orange. [/QUOTE]

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