RE: Pssst. Wanna buy a filter?

[Andrew Davidhazy <ANDPPH@xxxxxxxxxxxxxxxxxx>]

<snip>

> it.  As for why I/we block so much of the IR light out is when we examine
> paintings and drawings and the stronger the filter the IR effect becomes
> more dramatic, and you will get better penetration through he various paint
> layers.

Would this not depend on the spectral absorption characteristics of the paint
layer and its interaction with the spectral transmission of the filter along
with the influence of the spectral output of the IR source and all modified by
the spectral response of the recording medium?

;-)

Andy  o o  0 0 o . o  Andrew Davidhazy, Imaging and Photo Tech
       \/\/\/\/\/\/   http://www.rit.edu/~andpph  716-475-2592  
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