The Polaroid SX-70 Sonar OneStep Gold is an instant film camera using Polaroid's SX-70 integral film format. It is a variant of the folding single-lens reflex SX-70 line, fitted with the Sonar autofocus system that uses an ultrasonic rangefinder to set focus automatically.

UK auction hammer prices for this model span roughly £75 to £260 across the recorded sales, with a midpoint around £170 — though the dataset is thin and one result is nearly two decades old, so today's value for a clean, working example is best anchored to the more recent £75 saleroom result. As with other SX-70 variants, condition of the leatherette, hinges and electronics drives what one sells for in the current auction market in 2026.