Another experiment from the Obscuravan/MPL. 130×130 cm on Ilford matte baryta paper.
I used multiple pinholes on this one. One of the first experiments with the ‘reversed process’, where I tried to transform the negative to a positive image. After developing, I bleached the negative with potassium dichromate and sulfuric acid before redeveloping it in normal light.
I made a new pinhole camera for 4×5 size paper sheets. I randomly punched a couple of holes in an area of about a square centimeter.So the camera has multiple pinholes instead of just one, and they have different sizes.