Robert A. Baron wrote: > > Does anyone on museum-l have any information on the harmful effects (or > lack of harmful effects) of electronic flash photography on paintings, > manuscripts and paper works of art? > > Thanks for your information. > > ================================= > Robert A. Baron > mailto:[log in to unmask] > http://www.pipeline.com/~rabaron/ Of Course Flash lights do effect objects. However as with all damaging factors, the issue is more what do you deem acceptible and what not. A light level of 50 lux with 75uW/lum UV is accepted in a permanent exhibition. (8 hours 365 days per year for 10/15/25(?) years. Compared a flashlight with maybe 5000 lux and 300uW/lum UV for 1/250 of a second tots up to about 2 seconds normal lighting. Clearer is the damage to eyes, and do not forget the security camera's. Hope this is of use. Jaap van der Burg Collection Care & Consult (www.xs4all.nl/~gerlach/ccc)