Edwin H. Land and notes. He is buried in Mount Auburn Cemetery in Cambridge, Massachusetts, USA. Land was: Patents Edwin H. Land Edwin Herbert Land, ForMemRS, FRPS, Hon.MRI (May 7, 1909 – March 1, 1991) 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, among other things. His Polaroid instant camera went on sale in late 1948 and made it possible for a picture to be taken and developed in 60 seconds or less. Edwin Land
MiNT camera Polaroid SX-70 does not provide full manual control over exposure. SLR670m comes with the 'Time Machine', which enables manual control over shutter speed. MiNT re-designed the camera motherboard to provide a port of communication for the Time Machine. Shutter speeds on Time Machine range from 1s to 1/2000s plus bulb, time and auto exposure. The Time Machine only works with the SLR670m produced by MiNT, the standard Polaroid SX-70 will not respond to the Time Machine. ISO 160 when Time Machine is removed, or under Auto mode. In 2015, MiNT released a twin lens reflex instant camera called InstantFlex TL70.