Introduction: The Isolette III at a Glance
The Agfa Isolette III is a horizontal folding camera that records twelve 6x6 cm square pictures on a roll of 120 film. It was built by Agfa Kamerawerk in Munich as the top model of the Isolette family, and it stands out for its built-in rangefinder. If you like the idea of analog cameras that fold flat into a coat pocket, this is a very rewarding place to start.
The rangefinder is not coupled to the lens, so you measure the distance first and then set it on the lens yourself. It makes a good companion among the other rangefinder cameras in our range.
Shooting with a folding medium-format camera tends to slow you down in a good way. With only twelve frames per roll and a lens you set by hand, you look at light, distance and composition before you press anything.
Design Roots and Historical Background
A family of square-format folders
The Isolette name covers a series of compact folders from Agfa Kamerawerk in Munich, all for 6x6 cm pictures on 120 film. Camera-wiki.org calls the Isolette III the best-specified member. Its list of the series gives the model dates of 1952-58, while the model's own paragraph says 1951-60, so it is safest to say the camera dates from the early 1950s into the late 1950s.
In the United States the same camera was sold as the Ansco Speedex Special R.
Rangefinder and lens options
What sets the Isolette III apart is the rangefinder in the raised top housing. You turn a small knurled wheel until the two images in the finder merge, then read the distance and copy it onto the lens. Focusing is done by moving the front lens element, as on every Isolette. Later examples carry a film reminder on the left of the top plate, in the spot where earlier ones have a depth-of-field scale.
The lens and shutter combinations varied. Some cameras have an Apotar 85 mm f/4.5 with a Pronto or Prontor SV or SVS shutter. Others have a Solinar 85 mm f/4.5 with a Synchro-Compur, and later cameras can carry a Solinar 75 mm f/3.5 with a Prontor SVS or Synchro-Compur. The instruction manual covers two versions: the Apotar with Prontor SV and the Solinar with Synchro-Compur.
Key Technical Highlights
Format, film and opening
The manual says the camera takes normal 120 film and gives twelve 6x6 cm negatives. Frames are counted through a red window in the back: after closing the back you wind past the start marks until the number 1 appears.
The camera opens by itself. A light press on the safety lock releases the lens mount, which glides out into working position.
Rangefinder and exposure controls
The manual calls the rangefinder built in but not coupled. You turn the knurled indicator ring until the two finder images coincide, read the distance from the ring, and then transfer it to the focusing ring on the lens. On the Synchro-Compur version the apertures run from f/4.5 to f/22, and the shutter offers B plus speeds from 1 second to 1/500 s.
- 6x6 cm pictures, twelve per roll of 120 film
- Uncoupled rangefinder with a knurled wheel on the top housing
- Front-element focusing on the lens
- Self-erecting lens mount released by the safety lock
- Synchro-Compur version: f/4.5 to f/22, B and 1 to 1/500 s
Modern-Day Use in 2026
Where the Isolette III excels
The Isolette III suits anyone who wants medium-format negatives from a body that folds small. The large square negative holds plenty of detail.
Use it for:
- Portraits and still lifes
- Landscapes and travel pictures that you can crop later
- Black-and-white projects
Practical shooting tips
- Measure the distance, copy it onto the lens, and only then raise the camera to compose.
- Use a handheld light meter to set exposure.
- Wind to the next number in the red window straight after each shot so you avoid double exposures.
Buying and Maintenance Guide
What to check before buying used
Work through this list in good light:
- The lens mount should extend smoothly and lock firmly.
- Look through the lens for haze, fungus and scratches, and check the finder and rangefinder windows for dirt.
- Fire the shutter at every speed and listen for slow or sticky timings, and check that the B setting works.
- Turn the rangefinder wheel and see that the two images merge cleanly.
- Open the back and check for light leaks, such as worn seals, pinholes in the bellows or cracks in the corners.
In a dark room, shine a torch inside the open bellows and look for pinpricks of light from outside.
Film and power
This is a film camera, so the practical question is film rather than batteries. All you need is 120 film.
- Buy fresh 120 film and check the expiry date before you load it.
- Keep the red counting window covered when you are not winding the film.
Basic care and accessories
A few photography accessories will help keep a folding camera in good shape:
- A soft case or small bag to protect the bellows and lens
- A microfiber cloth and a blower for the lens and finder windows
- A handheld light meter for reliable exposure
- A compact tripod for slow shutter speeds
What to pay
On European marketplaces such as eBay, working examples are typically listed around €115–€180. Condition and version decide where a camera lands in that range.
Conclusion: A Pocketable Square-Format Classic
The Agfa Isolette III combines a large 6x6 cm negative, a fold-flat body and a built-in rangefinder in one compact package. Measuring and setting the distance by hand makes it slow, but also engaging.
If you want to try medium format without a heavy outfit, a well-checked Isolette III is a charming choice. Inspect the bellows, shutter and lens carefully and keep some fresh 120 film at hand.
FAQs
What film does the Agfa Isolette III use? It uses normal 120 roll film and produces twelve 6x6 cm negatives per roll.
Is the rangefinder coupled to the lens? No. The rangefinder is built in but not coupled, so you read the distance and then set it on the focusing ring yourself.
What lenses did the Isolette III have? Examples carry an Apotar 85 mm f/4.5 or a Solinar 85 mm f/4.5, and later cameras can have a Solinar 75 mm f/3.5, each paired with a Prontor or Synchro-Compur shutter.
What was the Isolette III called in the United States? It was sold there as the Ansco Speedex Special R.
Where can I find the Isolette III manual? The original instruction manual is available as a free PDF download on this page, under the first photo.
Ready to explore cameras like the Isolette III? Browse our analog cameras and rangefinder cameras at DutchThrift.com.
Sources: original Agfa Isolette III instruction manual; Isolette on camera-wiki.org, text licensed under GFDL 1.3; price range based on current eBay listings.