A fallen leaf, mounted in a photo enlarger and projected straight onto photographic paper. No camera, no negative.
The veins blocked the light and printed themselves — so what you are looking at is the leaf’s own structure at one-to-one, rather than a picture of a leaf.
I feel that directly observing nature can give us insights about patterns and functions. This is about as direct as observing gets.
Photogram on silver gelatin paper · independent project · 2003