Polaroid Sun 660 AF1981

History

The 660 AF debuted in 1981 as one of the earliest 600-format cameras and the first in that format to offer sonar autofocus. Sonar focus had been introduced on the SX-70 Sonar OneStep in 1978, where it earned a reputation for reliable performance in indoor and low-contrast situations that baffled passive-contrast rangefinders. The transition from the original 660 AF to the Sun 660 AF followed Polaroid's mid-decade styling refresh across the 600 line: the Sun series introduced a slightly redesigned clamshell body, updated flash circuitry, and revised cosmetics intended to modernise the lineup's appearance for the mid-1980s retail environment.

In terms of optical and autofocus hardware, the Sun 660 AF was essentially a continuation of the 660 AF platform. Polaroid's sonar transducer design had not changed fundamentally since 1978; what changed between the original 660 AF and the Sun variant was the surrounding camera body and flash system. The Sun-series flash was promoted as having better reach and more consistent results at the longer distances typical of group photography.

By the late 1980s the Sun series was itself giving way to later 600-format generations. Fixed-focus models had captured the low end of the market on price, and the SLR 680 served users who wanted the highest performance. The Sun 660 AF occupied the middle of this range: genuine autofocus at an accessible price, in a straightforward clamshell body.

Why It Matters

The Sun 660 AF illustrates the maturation of sonar autofocus as a consumer-grade feature within Polaroid's lineup. By the time the Sun series appeared, sonar had migrated from headline innovation (SX-70 Sonar, 1978) to a standard differentiator available at the mid-market tier. The technology had not substantially changed - the ultrasonic transducer principle remained identical - but its price point had dropped far enough that Polaroid could include it in cameras sold in mass-market retail rather than only in specialty or higher-end outlets.

The sonar system itself remains one of the more robust autofocus mechanisms of its era. Unlike early passive AF systems in 35mm compacts of the same period, sonar does not depend on subject contrast or ambient light to acquire focus. It fails in specific edge cases - shooting through glass (the pulse reflects off the pane), extreme soft surfaces, or mesh screens - but in the social and domestic situations for which the Sun 660 AF was designed, it produces reliably sharp prints across its working range. This is a meaningful practical advantage over the fixed-focus OneStep bodies, where subjects closer than about 1.2 m are consistently soft.

Sample Photographers / Notable Use

• The Sun series was a mainstream consumer product; documented fine-art use in published sources is sparse.
• 600-format cameras of this generation appear across personal and documentary photography archives of the 1980s; the wide white border and square image area are period markers.
• The revival of 600-format cameras by the Impossible Project and later Polaroid Originals in the 2010s brought Sun-series bodies back into active use; the Sun 660 AF is a practical choice for users wanting autofocus with modern 600 film.

References

• Camera-Wiki: Polaroid 660 AF - 660-line history and sonar system notes; covers the pre-Sun variant with applicable technical detail.
• Wikipedia: Polaroid 600 series - 600-format lineage and Sun-series context.
• Christopher Bonanos, Instant: The Story of Polaroid (Princeton Architectural Press, 2012) - Polaroid's 600-era product strategy and mid-decade lineup revisions.