Technologizer relate the story of the Polaroidâ€™s SX-70: The Art and Science of the Nearly Impossible:
Most important, unlike any other Polaroid, the SX-70 asked the photographer to do nothing more than focus, press the shutter, and pluck the snapshot as it emerged from the cameraâ€“and then watch it develop in daylight. It was the first camera to realize what Edwin Land said had been his dream all along: â€œabsolute one-step photography.â€
This was in 1972 and it was a landmark towards the true instant photography. Long before digital.