EXPLAIN HOW THE CAMER'S F-STOPS ARE RELATED TO DEPTH OF FIELD. HOW DOES THE DEPTH OF FILED IN A PORTRAIT AFFECT THE EMPHASIS?

the correct answer for this question is:

it is system invented in 1872 that produced the first illusion of movement. basically it was a disk with a series of drawings around the edge, showing the same object in slightly different poses. when it was spun, it created the illusion of movement.

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changeable lenses of different focal lengths allow light to enter the camera, which then forms the image on light-sensitive film" is the one among the following statements about working principle behind a basic still camera is true.