Gemma Frisius
Gemma Frisius (1508-1555), a Dutch astronomer, had
observed an eclipse of the sun at Louvain on January 24,
1544 using pinhole in his darkened room.
He later described the process in his book “De Radio
Astronomica et Geometrica” (1545) along with an illustration
of the camera obscura he used.
It is thought to be the first published illustration of a camera