but photographs are square?
Answers (1)
Lens change the focal point of light that is
?refracted on the retina.
That is............
By changing the shape of lense people can improve
their eyesight.
Once made...Lenses can be cut in2all shapes.
Oval type lenses are most popular.
Photographs are completely different.
Photographs are formed when light (image)
is mixed with certain compounds on photograher
film. The film / paper is what determines the shape.
It's more complex than the explanation..but I hope
that answers yr question.