Re: Wood and IR

[George L Smyth <GLSmyth@xxxxxxx>]

DDS7%CssAs%CTS@xxxxxxxxxxxxxxxxx wrote:
> 
> I've been hearing the caveats about wood film holders and IR and I want to
> check something else out.
> 
> I bought a 6x9 roll film back and am building a wooden frame for it for
> pinhole work.  There will be about 1/2" of wood between the film back and the
> outside world.  Is this enough to block IR?  Also, I will be using
> black mattboard "bellows" and lensboards for some of my camera "fronts".  Is
> this a problem?  Should I wrap them in aluminum foil?

I would think so.  Without testing, I would assume that black mattboard
would not be IR opaque.  I would also assume as much with any wood until
tested otherwise (I would guess that certain woods might be better than
others).  I shoot 4X5 pinhole IR and have covered my wooden camera with
the plastic that one gets with photographic paper.  I haven't noticed
any problems, besides the fact that the thing looks like hell.  Then
again, pinhole cameras should look like trash. <g>

george

- -- 
 Handmade Photographic Images     
  http://www2.ari.net/glsmyth/


*
****
*******
******************************************************
*  To remove yourself from this list, send:          *
*         UNSUBSCRIBE INFRARED                       *
*       to                                           *
*         MAJORDOMO@xxxxx                            *
*----------------------------------------------------*
*   For the IR-FAQ, IR-Gallery and heaps of links:   *
*  http://www.a1.nl/phomepag/markerink/mainpage.htm  *
******************************************************

------------------------------