What is the estimated minimum duration required for the original exposure time?
Answer
Eight hours
While the exact time is debated, estimates place the minimum exposure time between eight hours and possibly several days.
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Who created the earliest surviving photograph capturing a recognizable image?What is the name given to the earliest surviving photograph by Niépce?Approximately when was the View from the Window at Le Gras captured?What was the name of the specific photographic process Niépce employed for this world-first image?What light-sensitive material formed the basis for Niépce's Heliography process?What is the estimated minimum duration required for the original exposure time?What key difference distinguished Niépce's Heliography from later Daguerreotypes regarding light reaction?In what year was the *View from the Window at Le Gras* rediscovered?Where is the original physical plate of the photograph currently housed today?What specific structure is mentioned as being visible in the view looking out from the upstairs window?What was Niépce attempting to achieve by experimenting with light-sensitive methods before this photograph?Approximately what were the physical dimensions of the original plate?