The Polaroid SX-70 Land Camera Sonar Autofocus is a folding single-lens reflex instant camera that uses SX-70 integral film. It added ultrasonic sonar-based autofocus to the original SX-70 body design and was positioned as the premium consumer instant camera in Polaroid's late-1970s lineup.

At recent UK auction, hammer prices for this model have ranged from around £30 to £190, with a median close to £110 based on the sales on file. The market is condition-sensitive in 2026: cosmetically tired bodies with tarnished leatherette or sticky rollers sell for tens of pounds, while clean, tested examples fetch the upper end of the range at saleroom level. Because the sample of recent sales is small, a single strong result can shift the apparent value significantly.