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Here you can see the oldest photographs in the world. The people lived in a world without electricity, cars, airplanes trains were just invented
Photographic image production
According to the art historian Nicholas Allen the image on the shroud was formed by a photographic technique in the 13th century. Allen maintains that techniques already available before the 14th century—e.g., as described in the Book of Optics, which was at just that time translated from Arabic to Latin—were sufficient to produce primitive photographs, and that people familiar with these techniques would have been able to produce an image as found on the shroud. To demonstrate this, he successfully produced photographic images similar to the shroud using only techniques and materials available at the time the shroud was made. He described his results in his PhD Thesis, in papers published in several science journals, and in a book.
However a double photographic exposure, needed in that case, should have considered the distances and in such case there would be areas of photographic superimposition with different lights and shades. The distances on Shroud instead correspond to the body position.