Re: Film pressure plate

[Andrew Davidhazy <ANDPPH@xxxxxxxxxxxxxxxxxx>]

> I agree with you as far as the tape is concerned. However if you fix a
> #87 sheet (0.1 mm thichness) btfr there won't be any problems to cover
> the pressure plate. There is enough room (0.4 mm left in a Nikon!)

Jaap,

You are quite right. However, my "advice" simply was that the material attached
to the film pressure plate should be of uniform thickness ... gaffer tape makes
me shudder. My suggestion was backing paper from 120 film. Apparently others
are using that too. You could use any number of other materials but they should
absorb IR, they should generally be fairly thin and also be easy to remove. 

BTW, the placement of filter material between the film plane rails was
a suggestion that I believe I initially made in an article that appeared in the
Photo Society of America Journal sometime in the 70's. The title of the article
was Action Infrared Photography.   ;-)   ;-)   ;-) 

take care,

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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