I've seen a 6x9cm view camera made using a vinyl duct material, the
trick--as you rightly pointed out--is to get it light proof.
Mike
>I would like to make a suggestion of something I have thought about but not
>tried. There is a material used by heating and air conditioning installers
>for flexible ductwork that is very similar to the "Slinky" I played with
>when I was a kid. It is also similar to the dryer vent hose sold in
>hardware stores, but is bigger and more rigid. It comes in 6" and 8"
>diameter (and probably more sizes).
>
>I thought that it might work as a bellows material. There are drawbacks. It
>is made from very reflective foil over a wire frame, but the foil could be
>painted or covered internally with a non-reflective or flat black material.
>It is not as rigid as a fabric bellows (although extra long bellows
>sometimes sag anyway). And it would probably not last as long.
>
>But the price is right. It was less than a dollar a foot when I bought some
>to play with. A foot of it would compress down to much less than an inch.
>And it is very light.
>
>I was going to attach it to the front and back standards with embroidery
>hoops. This would allow me to change bellows about as easily as changing
>lenses.
>
>Since I am working on another project at this time I wanted to pass the
>idea along in case someone else wanted to mess around with it.
>
>I enjoy the list and appreciate the many things I have learned here.
>
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