C41
Kodak Portra 400
Kodak Portra 400 is a professional C-41 color negative film known for flexible exposure latitude, natural skin tones, and fine grain.
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The Polaroid Sun 660+ is a sonar-autofocus 600-series integral instant camera introduced in 1983 as a refined variant of the Sun 660 AF. It uses the same sonar-rangefinder system introduced on the SX-70 Sonar in 1978 - a transducer above the lens emits an ultrasonic pulse and adjusts the lens position based on the time-of-flight return - adapted for the 600-format body and film. The Sun 660+ retains the automatic exposure and integral flash of the standard Sun 660 while incorporating minor ergonomic and cosmetic refinements that distinguished it as a "plus" grade within the Sun lineup. It was positioned as a step up from fixed-focus 600-series bodies for consumers who wanted reliable focus across varying subject distances.
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Recommended film stocks for the — format your camera takes.
C41
Kodak Portra 400 is a professional C-41 color negative film known for flexible exposure latitude, natural skin tones, and fine grain.
View profile →BW
Kodak Tri-X 400 is a classic black-and-white film known for strong tonality, visible grain, and documentary character.
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About this camera
A refined Sun 660 with sonar autofocus, carrying Polaroid's 600-series flagship consumer feature set into the mid-1980s.
| Field | Value |
|---|
| Format | Polaroid 600 integral instant film |
| Lens | Fixed optic, ~116mm equivalent |
| Focus | Sonar autofocus, ~0.6 m to infinity |
| Shutter | Auto electronic leaf; ~4s - 1/200s |
| Meter | Silicon photodiode, auto |
| Flash | Built-in electronic flash, automatic |
| ISO | 600 (film-in-pack, fixed) |
| Battery | In every film pack |
| Years | ~1983 - ~mid-late 1980s |
Polaroid's sonar autofocus system debuted on the SX-70 Sonar OneStep in 1978, a landmark feature that gave Polaroid cameras a genuine technical differentiator over fixed-focus competitors. When Polaroid introduced 600-format film in 1981 - with its higher ISO and brighter flash - it carried the sonar system into the new format's premium tier. The Sun 660 AF was the primary sonar-equipped 600-format body in the early 1980s; the Sun 660+ followed it as a production refinement rather than a ground-up redesign.
The "Sun" naming referred to Polaroid's marketing emphasis on the cameras' ability to perform in bright outdoor light, a consequence of the 600-speed film's latitude and the flash-suppression circuitry that prevented the built-in flash from firing in daylight. The 660+ sat in the upper tier of the consumer 600-series range, below the folding SLR bodies (680, 690) and above the fixed-focus mass-market models. Production continued through the mid-to-late 1980s, with exact discontinuation unverified; by the early 1990s Polaroid had rationalised the 600-series lineup and the Sun 660+ naming had been retired.
The Sun 660+ represents the maturation of sonar autofocus in consumer instant photography. Polaroid's sonar system was technically sophisticated for its era - ultrasonic ranging was not common in consumer cameras in the early 1980s - and its inclusion in a relatively affordable 600-series body made reasonably reliable autofocus accessible to a broad consumer market before the technology became standard in 35mm compacts.
From a use perspective, the sonar system performs noticeably better than fixed-focus optics at closer distances (0.6-1.5 m), which is where most casual instant photography happens. The Sun 660+ therefore represents a meaningful practical improvement over peer fixed-focus 600 bodies, not merely a cosmetic or marketing distinction. It is also a useful historical marker: by 1983 Polaroid had effectively democratised sonar autofocus at a consumer price point, a contrast to the premium positioning of sonar on the original SX-70.
Polaroid Sun 660+
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