The Polaroid SX-70 PolaSonic AF is a folding instant camera using SX-70 integral film, part of the SX-70 family Polaroid produced from the 1970s into the 1980s. It added sonar autofocus to the original folding SLR concept, positioning it above the manual-focus SX-70 models when new.

Auction data for the SX-70 PolaSonic AF is thin: a single UK saleroom hammer result of £110 from 2023 is the only verified data point we hold, so today's value guidance should be treated as indicative rather than a settled market. Hammer prices in the wider folding SX-70 family tend to be condition-led, and a working PolaSonic AF with clean leatherette and a functioning sonar module would be expected to sell for a similar figure at auction, though commission and retail dealer mark-ups sit on top.