From: Mark Roberts
William Robb wrote:
>Igor, filters aren't all that spectrum specific, and tend to be cut
>filters, in that they don't pass any spectrum below a particular
>wavelength (which will vary from filter to filter).
>UV florescence has been a problem since the dawn of electronic flash. A
>lot of things reflect a disproportionate amount of UV light.
Mr. Robb speaks the truth. And note that fluorescence involves
absorbing light of one wavelength (ultraviolet) and re-emitting the
energy at *different* wavelengths (in the visible spectrum).
Looking at the other photo from the party that Igor posted, I suspect
there was a significant amount of blue skylight from the window. The
brain has the power to process for that and still detect the colors in
the tableware. The camera sensor does not.
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