Re: Polar Bears and Infrared film question

[Stanee Rae Pettit Murray <stanee-rae@xxxxxxxxxxxxxxxx>]

>Greg McGonagill wrote:
>
>I photographed a model recently in front of a beautifully textured gray
>background, which also came out nearly white in the prints! There was no
>sign of the dye pattern on the background at all. (This was my first
>roll of HIE).
>
>At the same time, a light gray drape in the picture came out dark black!
>The values are drastically different from the conventional
>black-and-white images I took at the same time, under identical lighting
>conditions.
>

I did an outdoor engagement portrait with HIE once.  Both the bride and
groom were wearing dark sweaters.  When I got the photos back, one sweater
remained dark while the other turned very light.  I asked the bride to look
at the garment tags, and tell me what the fabric was.  One sweater was a
synthetic, while the other was wool (I don't remember which was which).

The composition of the fabric seems to make a difference.  Satin, even
black, will turn white with HIE.  This is often seen in the lapels of the
groom's tux in wedding photos.

Stanee
___________________________________________________________________________

Stanee Rae Murray, CPP                      PPANJ & MARS WebMaster:
Stanee Rae Studio                           www.cmpsolv.com/ppanj
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Topic No. 5