Photography

Photography is the art or procedure of creating pictures or images by the action of radiant energy (typically visible light) on a sensitive surface such as reactive film. While black and white is still a popular photography choice, today's digital and film photographs are primarily shot in color. The word photography comes from Greek words and means “drawing with light.”

History

Frenchman, Joseph Nicephore Niepce, took the first photo in 1826. It was taken in Paris and was called “View From the Window of Gras” . To achieve this, Joseph Niepce used a Camera Obscura and called the process Heliograph. The process never became practical for everyday use and could not be used for commercial purposes.

In 1839 Louis Jacques Daguerre (who worked with Joseph Niepce), announced a new photographic process called Daguerreotype to the French Academy. The process was more practical than Heliography and ushered in the photographic era.

Exposure

Exposure is the amount of light needed to form an image. This is measured with a light meter that is built into the SLR camera. It turns on immediately when the camera is switched on. The light meter sensitivity is adjusted by the ISO settings (ISO means: International Standards Organization). ISO is also sometimes referred to as ISO Ratings.