View from the Window at Le Gras
To photograph the image, Niépce dissolved bitumen in lavender oil, a solvent often used in varnishes, and coated a sheet of pewter with the mixture, he then placed the coated pewter sheet inside a camera obscura to capture the picture. After eight hours he removed the pewter plate and washed it with lavender oil to remove the unexposed bitumen. Niépce called his process Heliography or "sun writing".
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