Hello all! I am new to pinholes and I have a question on exposure I was hoping someone could answer. I am in the process of making a camera with a .34mm pinhole and a focal length of 75mm. I want to use illfochrome paper instead of negative or film. I can't figure out my exposure because I don't know what ASA to rate the paper. Does anyone have any tips that would help me to determine my exposure time? Many thanks in advance... Glenn
