jaapv Posted May 27, 2008 Author Share #41 Posted May 27, 2008 Advertisement (gone after registration) You're an expert here, Alan, but that vivid a blue with so little grey light outside? Otoh, it is the only reasonable explanation.... Link to post Share on other sites More sharing options...
Advertisement Posted May 27, 2008 Posted May 27, 2008 Hi jaapv, Take a look here Weird effect. I'm sure you'll find what you were looking for!
AlanG Posted May 27, 2008 Share #42 Posted May 27, 2008 You're an expert here, Alan, but that vivid a blue with so little grey light outside? Otoh, it is the only reasonable explanation.... Judging from the candle, your photo was taken in quite low light. So even if the sky looked dark to you, it is bright enough in the photograph to cause the blue result. The skylight only looked grey to you because our visual system compensates for color. (Color constancy is the technical term.) Grey looking or not, it is very blue when compared with tungsten or candle light. As I said previously, if you have any doubt, shoot the same photo again. Start when the sun sets. Then periodically shoot a photo until it is completely dark outside. Link to post Share on other sites More sharing options...
jaapv Posted May 27, 2008 Author Share #43 Posted May 27, 2008 Thanks Alan. This was the first of a series with about 5 min intervals and the only one that did this. I goes to show how fast light can change, I suppose. Link to post Share on other sites More sharing options...
Jamie Roberts Posted May 27, 2008 Share #44 Posted May 27, 2008 Thanks Alan. This was the first of a series with about 5 min intervals and the only one that did this. I goes to show how fast light can change, I suppose. Especially since it's not the overall light that needed to change, but simply the reflectance angle of whatever outside was causing the highlight. A second or two of breaking cloud and bingo--5 plus EV stops and blown blue directly reflected highlights. Don't forget a mirror-reflected light source is as bright as its source. Coupled with some diffusion in the sky and you get the effect you have. (By the way, if it were a problem with AWB, you could correct it in the RAW converter, which I'm betting you can't ) Link to post Share on other sites More sharing options...
jaapv Posted May 27, 2008 Author Share #45 Posted May 27, 2008 I did not think so- I think the superior WB of the newest firmware is correct at ignoring smaller blue patches like this;) Link to post Share on other sites More sharing options...
SJP Posted May 27, 2008 Share #46 Posted May 27, 2008 It's very gratifying to see that after 3 pages of intense discussion the conclusions seems to have settled on the explanation I gave in post #2 Link to post Share on other sites More sharing options...
voightL Posted May 28, 2008 Share #47 Posted May 28, 2008 Advertisement (gone after registration) Hi Jaap, I remember reading somewhere you are a dentist. Maybe your nurse is doing some dentistry in your garage with curing light or doing "laser" teeth whitening while you are preparing for dinner. Link to post Share on other sites More sharing options...
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