"Film developed with Kodak D76 - Agfa Agefix B&W Pinhole diameter = 0.2 mm (about) Focal length = 30 mm F number = 150 Film = Kodak T-MAX 100 35mm Exp = 15 sec. (cloudy)"
"Home made pinhole camera (wood) Pinhole diameter = 0.2 mm (about) Focal length = 30 mm F number = 150"