In case someone else was curious, it took at most 20 years for the first pornographic photograph.

From Wikipedia: "The oldest surviving image of a pornographic photo is dated back to about 1846, described as to depict "a rather solemn man gingerly inserting his penis into the vagina of an equally solemn and middle-aged woman"."

I knew old cameras needed a long exposure, but an entire year?!

From wikipedia:

View from the Window at Le Gras (French: Point de vue du Gras) is the oldest surviving photograph. It was created by French inventor Nicéphore Niépce between June 4 and July 18, 1827, in Saint-Loup-de-Varennes, France, and shows parts of the buildings and surrounding countryside of his estate, Le Gras [fr], as seen from a high window. The image was created by heliography, a process which Niépce had invented around 1822, and which uses the hardening of bitumen in light to record an image after washing off the remaining unhardened material.

Niepce is ill treated by history. People who know a bit remember Daguerre, because of the daguerreotype, but Niepce is the first one to develop the process.

There's a nice museum in his birthplace in Châlons sur Saône for those interested, and geologically suited.

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