He has long worked with different types of photography, including pinhole cameras and camera obscura.
There is a camera obscura placed in an ancient castle, which projects into the fiver, and which we admired extremely.
In a camera obscura, the butcher's cart, and the figure of one of our own family amuse us.
He anticipated by many years the invention of the camera obscura.
He also gives descriptions of the camera obscura and of the burning-glass.
Then you have only to suppose, that the representation in the camera obscura, is similar to that on the retina.
The principles of its construction are the same with those of the camera obscura.
I feel as though I were in the dark of a camera obscura gazing into their 235 brightness.
He saw them all as on the ever-changing field of a camera obscura.
He judged that this mirror was some modern replacement of the camera obscura, but that matter was not explained to him.