Question

What is a pinhole camera? How do we know that these devices existed before the nineteenth century?

Answer 1

1.5 We know that the pinhole camera existed before the nineteenth century because it was documented in books dated before that. The pinhole camera was also commonly used by artists as aid. They used the picture produced by the camera as their guide while sketching sceneries.

Answer 2

Answer:  A simple camera in which an aperture provided by a pinhole in an opaque diaphragm is used in place of a lens.

A pinhole camera is a simple camera without a lens but with a tiny aperture (the so-called pinhole) – effectively a light-proof box with a small hole in one side.

We know that the pinhole camera existed before the nineteenth century because it was documented in books dated before that.

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