FOUNDATION: UNIT-1
Photography - "The process of recording images by the action of light, or related radiation, on a sensitive material."
The 'Camera Obscura.' The camera obscura was the starting development of the camera. It consisted of a dark room or space with a small hole on one side to allow light to pass through. Thus projecting an inverted image on to the opposing side. A pinhole camera works in an identical way. This tool was used to help artists perfect their drawing by having a precise image on a wall to work with. Helping artists draw things down to fine detail. However later on in 1825, a man named Joseph Nicephore Niepce made the first known heliographic engraving from a metal plate using a camera obscura. The metal plate was exposed under an ordinary engraving and was then copied by photographic means. This was a large step to the first permanent photographic image from nature taken with a camera obscura in 1826 Heliography is Joseph Nicephore Niepce's photographic process which he used to create the earliest known permanent photograph from nature the 'View From the Window at Le Gras' in 1826.
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Niepce took this photo using an exposure time of eight hours,
which explains the suns illumination of both sides of both buildings.
which explains the suns illumination of both sides of both buildings.