Edwin Herbert Land, ForMemRS, FRPS, Hon.MRI was an American scientist and inventor, best known as the co-founder of the Polaroid Corporation. He invented inexpensive filters for polarizing light, a practical system of in-camera instant photography, and the retinex theory of color vision. His Polaroid instant camera went on sale in 1948 and made it possible for a picture to be taken and developed in one minute or less.