This maybe O.T. but I'll ask anyway ! This photo was taken of a computer controlled TIG ( used to weld new chassis rails ) . Can someone explain the "pink" ball to the left of the arc which is inside a larger blue ball ??
You are looking the coatings on the various lenses in the camera. Those artifacts are produced in the lens, not the weld area. The photographer should have used the proper filters for that shot, and it would have been much better. B.
Exactly. It's the same as the "lens flare" you see in movies, especially during "high noon" desert scenes and the like. The light is bright enough to illuminate (rather than just pass through) the lenses themselves. Kind of like when you light a sheet of acrylic from the edge- the whole thing glows. Various lens coatings actually reduce this effect- among others- but can't cure it completely, especially in cheaper cameras. The "ball" you're seeing is smaller than the lens, because you're seeing a reflection of the illuminated lens. Actually, it's usually more like a reflection of a reflection of a reflection, as the light bounces around the various lens elements. (Cheap cameras usually have at least two or three lenses- better cameras can have six, high-end stuff could have 12 or more elements.) Doc.
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