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The 11 camera experiment

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pinhole photo

Flat film plane cameras

This was taken with a 4 x 5 inch camera of 1 inch focal length.

This extremely short focal length expands space even more and has an extremely wide angle of view. Because the pinhole is now much farther from the film plane at the edges than it is in the center, the light is spread out more and therefore the exposure gets less and the edges are extremely underexposed compared to the center.,