Quote Originally Posted by Zishe Breitbart View Post

2nd I planned to build some kind of LF instant camera using direct positive paper. It is quite hard to design a mechanical system that is able to handle uneven FB paper and place it flat at the correct position. However such a system becomes much simpler if the paper is mounted already.

Zishe



This makes sense now. The aluminum sheet allows for a flat, even plane to expose to. I'd imagine that it might also serve as a kind of anti-halation layer, improving image quality that much more.

Sounds really cool. Please post pics if you can.