Its amazing how photography has evolved from simple pinhole camera to the most advanced digital single reflex cameras. Beginning with the humble pinhole camera, which was developed in 1600s and then in 1850. From successful recording of positive image on a metal plate, photographic industry has evolved into a giant digital age. In earlier days photographic equipment were very hefty and heavy. For example,during the Civil War, photographic equipment involved two horse wagons coupled with lightproof buggy. The biggest limitation in earlier days was lighting. As such early photographic industry was limited to light sources available.
(more…)