I forgot to add that the negative was 5x7Ilford iso 400 curved in a semicircle to conform to the curve of the optimal image. When it's put right up against the front of the camera it results in nearly a 180 degree angle of view. The curved lines at the sides are the edges of the filter holder that holds the lens cap shutter. The metered exposure for the pinhole was 4 hours. A seven day exposure resulted in a very thin neg. This one was quite dense.
