I'm thinking of placing a 4" x 5" negative a few inches in front of a truck bed sized camera obscura and developing onto cyanotype coated sheets. Does anyone know if putting a negative in front of a camera obscura can be succesful? I'm hoping it'll just function like a giant enlarger.
2nd is cyanotype capable of long exposures (12 hours or so) or will it degrade too significantly over that time.
2nd is cyanotype capable of long exposures (12 hours or so) or will it degrade too significantly over that time.