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.
View profile →compact-35mm
The Robot Star (1952) is a spring-motor-driven 35mm camera producing 24×24mm square frames on standard 35mm film cartridges, built by Otto Berning & Co. of Düsseldorf, West Germany. It is the civilian consumer evolution of the prewar Robot II (1938), retaining the fundamental spring-motor rapid-sequence concept while introducing a more refined and market-oriented package.
Reference
Recommended film stocks for the 35mm 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 →C41
Kodak Gold 200 is a daylight-balanced C-41 color negative film with warm color, moderate grain, and a classic consumer-film look.
View profile →C41
Kodak UltraMax 400 is a versatile consumer-grade ISO 400 daylight-balanced color negative film with T-grain emulsion, delivering warm Kodak colors, fine-for-speed grain (PGI 46), and wide exposure latitude. Currently in production and available globally as a single-roll and multi-pack.
Develop 35mm film
Labs in our directory that process 35mm film.
Before you buy used
About this camera
Otto Berning's spring-wound Robot Star brought rapid-fire square-format photography to a generation of postwar European enthusiasts — and to police forces, scientists, and surveillance services worldwide.
| Field | Value |
|---|
| Format | 35mm, 24×24mm square (50 exp per 36-exp roll) |
| Mount | Robot bayonet |
| Years | 1952–1959 |
| Standard lens | Schneider Xenar 38mm f/2.8 |
| Fast lens option | Schneider Xenon 38mm f/1.9 |
| Shutter | Focal-plane: 1/25s – 1/500s + B |
| Flash sync | 1/25s |
| Film advance | Spring motor (approx. 8 frames per wind) |
| Meter | None |
| Viewfinder | Optical direct, no rangefinder |
| Battery | None |
Otto Berning launched the original Robot I in 1934, a revolutionary concept in rapid-sequence photography built around a clockwork spring motor that eliminated the need to manually wind the camera between frames. The Robot II (1938) refined the design and achieved significant sales to scientific, press, and military customers.
After World War II, the Robot concept was reconstituted at Berning's rebuilt Düsseldorf factory. The Robot Star (1952) brought the spring-motor system to a postwar consumer market eager for modern technology. The camera sold to amateur photographers, police and law enforcement agencies (who used it for surveillance photography), industrial quality-control departments, and scientific institutions recording rapid sequences of data.
The Robot Star led to the Robot Royal 24 and Royal 36 — the latter adding full 24×36mm frame coverage — in the mid-1950s. The spring-motor Robot concept continued in specialist form into the 1980s and beyond, with Robot cameras used in automatic photo-enforcement and industrial documentation systems.
The Robot Star occupies an unusual niche: it is a genuinely pocketable camera capable of sequential frame rates that would not become common in mainstream 35mm cameras until motorised SLRs of the 1970s. The square format is aesthetically appealing to contemporary photographers familiar with Hasselblad and medium-format square imagery — rendered here at 35mm scale. The Schneider lenses are excellent and the spring-motor mechanism remains usable and mechanically interesting today.
For collectors, the Robot Star is an entry point into the German spring-motor camera tradition that runs from the 1930s Robot I through to postwar industrial cameras.
The Robot bayonet mount accepts a range of interchangeable lenses:
C41
Kodak ColorPlus 200 is an affordable, consumer-oriented daylight-balanced color negative film at ISO 200. Known for warm, slightly muted color rendition, fine grain, and wide exposure latitude, it is currently in production and widely available in Asia and select global markets.
View profile →BW
Kodak Tri-X 400 is a classic black-and-white film known for strong tonality, visible grain, and documentary character.
View profile →Robot Star
Image coming soon