Re: A fault on some EIR slides.

[Michel Wurtz <mw@xxxxxxx>]

Jason Revell wrote:

> The 35mm slides show a fuzzy/diffused pink/magenta circle in the very center
> of each frame, more a VERY strong cast than a bright colour.  The circle is
> about 8mm in diameter including about 1.5mm of diffusion around it's edges.
> The level of this IR fogging is consistant no matter what exposure is given
> to the film and their should be no lens flare or anything like that in the
> photo as it is a simple copy of a painting.  They have also retaken the
> photo's and the same fault reappeared in exactly the same manor, though I do
> not know if they used the same camera body.

A silly idea : if the slides were taken in a museum, there is perhaps some
anti-thief infrared active sensor that reflects somewere in the painting ?

--
Michel Wurtz
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