Reels tagged #photography
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Firsts
The first photograph took hours to shoot
Nicéphore Niépce made the oldest surviving photograph around 1826 in France. The pewter plate needed an exposure of many hours, so the sun lit both sides of the courtyard.
Technology
Fast shutters are a moving slit
Above about 1/250s the curtains never fully open — a narrow gap sweeps the sensor. That is why propellers and fast objects can come out bent in photos.