Re: <OT> what causes fade? was Re: [OM] film longevity

[John A. Prosper]

On Tue, 21 Mar 2000, Acer V wrote:

|<snipped table w/ data>
|
|So what is it that causes fade or color shift exactly? What's it about
|bright light? (museums don't want flash photos either; read "faked" aged
|documents are made by exposing to HID lamp)

Obviously, there is a photochemical reaction to excessive light.


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