Re: Wood effect

[Rod Sage <rsage@xxxxxxxxxxxxxxxxxxxx>]

I asked:
>Could someone explain the Wood effect? Sounds like there's a joke in
>there somewhere.
>RDS

Then Clive responded:
>There should be a joke there but it simply means green foliage
appearing white.
>The effect can only observed indirectly without the use of
hallucinogens.

After posting my message I went to the archives and found:

"the Wood-effect was first reported in 1910 by a guy named Wood when
                   shooting with a filter of 720nm." etc.

First I felt stupid. Duh! Then I began to wonder when infrared film was
first used. Was Mr. Wood using infrared film or simply used a filter on
typical pan or ortho film which happened to have a wide sensitivity
range? Where can I find info on early IR films? I have never seen early
IR photos other than military WWII era.

RDS



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