Advancement of the CameraBy definition a camera is a lightproof object, with a lens, that captures incoming light and directs the light and resulting image towards film (optical camera) or the imaging device (digital camera). All camera technology is based on the law of optics first discovered by Aristotle. By the mid-1500s a sketching device for artists, the camera obscura (dark chamber) was common. The camera obscura was a lightproof box with a pinhole (later lens were used) on one side and a translucent screen on the other. This screen was used for tracing by the artists of the inverted image transmitted through the pinhole.
Around 1600, Della Porta reinvented the pinhole camera. Apparently he was the first European to publish any information on the pinhole camera and is sometimes incorrectly credited with its invention.
Johannes Kepler was the first person to coin the phrase Camera Obscura in 1604, and in 1609, Kepler further suggested the use of a lens to improve the image projected by a Camera Obscura.