http://www.imaging-resource.com/news...ence-of-a-myth

The other day, I went to an exhibition of photographs by W. Eugene Smith. Entering the museum, I spotted a sign that said, “No Flash Photography!” Out of curiosity, I walked over to a museum guard and asked him why flash photography was prohibited.

His response was "le froid de la lumière est mauvaise pour l'art" - "the cold from the flash is bad for the art." Cold from the flash? Say what?

At first, I laughed. Was this some weird Jedi mind trick?
Interesting article