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120 film

How to Make a Panoramic Pinhole Camera: A 120 Film 6×12 Build

A practical guide to the scratch-built 120-film panoramic pinhole camera: choose the format, make the curved 6×12 body, set the aperture, and shoot and process the roll.

By ThatPainter Team 4 min read
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To make a panoramic pinhole camera, build a light-tight body around the film format you want, then set the pinhole-to-film distance and aperture for that geometry. Ross Orr’s Make: “Pin-o-rama” is a scratch-built 120-film design that exposes six wide 6×12 frames per roll. Its key dimensions are a 65 mm-radius curved film plane and a 0.33 mm pinhole. The result is a camera for deliberate, long exposures—not a quick snapshot device.

Choose the film format before you build

The film width and intended frame size determine the camera’s film path, gate and body proportions. Orr’s Make: project uses standard 120 roll film and produces six double-width panoramas per roll. This is a 6×12-style build, not a camera that accepts ordinary 6×6 frames without changing the design.

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If you would rather assemble a kit or use 3D-printed parts, Dora Goodman’s SCURA is a different option: its listed formats are 35 mm panoramic with 60×25 mm negatives, or 120 in 6×6. It is not a drop-in 6×12 version of the Make: camera. Compare format and negative dimensions as well as how much construction you want to do. SCURA Pinhole Camera

Set the pinhole and curved film geometry

In the Pin-o-rama design, matching D-shaped plywood top and bottom pieces define the body. A 105° curved section with a 65 mm radius joins tangent flat sections. The project uses ½-inch plywood and places the film along the curved back. The curve helps keep the image surface at a more consistent distance from the pinhole across the wide frame; curved film can also make straight lines appear visibly bent.

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For its 65 mm pinhole-to-film distance, the project specifies a 0.33 mm aperture, with a tolerance of ±20%, or about f/200. These are the dimensions of this particular design, not universal values: changing the film format or pinhole distance changes both exposure and image character. Check that the hole is round and its diameter is close to target; Orr suggests checking it with a scanner or projector. A clean, round hole matters more than simply making the opening as small as possible. Ross Orr’s Make: project

Build the camera body and shutter

Plan for a day or two for the original scratch build. The detailed project uses metal flashing for the film gate and shutter, a cardboard shutter chamber, spool hardware and a tripod mount. Black paint or tape helps suppress stray reflections and light leaks. Follow the project drawings for the shape and placement of the gate and shutter rather than improvising dimensions that determine film tracking or the focal distance. Build Your Pinhole Panorama Camera, Make: Magazine Volume 09

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Rank #2
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  1. Cut the body pieces. Make matching D-shaped top and bottom panels and form the 65 mm-radius, 105° curved back with its tangent flats, following the project plan.
  2. Install the gate and film path. Fit the metal gate and spool hardware so the 120 film can travel across the image opening and advance without snagging.
  3. Make and fit the pinhole. Use a thin metal insert for the aperture, and check its roundness and approximate diameter before fixing it at the specified distance from the film.
  4. Install the shutter assembly. Build the cardboard shutter chamber and metal shutter as shown in the guide; check that the shutter opens and closes cleanly.
  5. Control light inside the body. Blacken or tape areas that could reflect light toward the film, then close the camera and inspect seams and the shutter for leaks before loading film.
  6. Add a stable mount. Fit the tripod mount so the camera can remain still during multi-second exposures.

Load and advance 120 film

Load the film away from direct sunlight or other strong ambient light. The backing paper protects the emulsion, but it does not make careless loading safe. Take the roll out of its light-protective pouch only when you are ready to load it, and thread it through the camera’s film path as shown in the project guide.

After each exposure, wind to the next odd frame number to avoid accidentally exposing the same section twice. The design’s guide says a roll yields six double-width panoramas. Once the roll is exposed, wind all of it onto the take-up spool, tape it closed, and open the camera in dim light. The Make: build guide

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Expose the film without camera shake

Orr recommends ISO 100- or 200-speed negative film for this design. The project’s guide gives 2 seconds in sun and 10 seconds in bright shade as examples for 100-speed film. Treat those as starting examples from the guide, not guaranteed exposure times: actual exposure depends on the light, the film and its reciprocity behavior.

For an initial estimate at roughly f/200, the guide suggests taking a meter’s exposure time at f/16 and multiplying it by 150. Check the result against the conditions and adjust as needed. Faster film can make timing in bright sun difficult. Because even a short exposure is measured in seconds, use a tripod or another stable support and avoid touching the camera during the exposure.

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Ilford Obscura Pinhole Camera Only
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Arrange processing for the wide negative

A 6×12 negative is nonstandard for many processing and scanning workflows. Before shooting, confirm that the lab will process 120 film and return the negatives uncut; tell the lab that the roll contains wide panoramic frames. Scanning the uncut strip is one way to digitize the results, but check that the scanner or service can accommodate the negative width.

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Is a photographic pinhole camera safe for looking at the Sun?

No: do not look directly at the Sun through or toward a photographic pinhole camera. A pinhole projection activity is different: NASA JPL’s instructions project an image onto a surface for viewing and warn that direct solar viewing requires equipment specifically designed for it. NASA JPL: How to Make a Pinhole Camera

Quick Recap

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HOLGA Holga 120 Pan Panoramic Medium Format Film Camera 90mm Optical Lens, Panoramic Viewfinder, Bubble Level Indicator, Dual Hot Shoes, 120 Film Format
HOLGA Holga 120 Pan Panoramic Medium Format Film Camera 90mm Optical Lens, Panoramic Viewfinder, Bubble Level Indicator, Dual Hot Shoes, 120 Film Format
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RETO PANO 35mm Film Camera - 22mm Wide Lens, Panorama, Easy Switch, Cinematic Modes, Lens Cover, Built-in Flash, Reusable (Film & AAA Battery are not Included) (Sheer Black)
Suitable for 35mm negatives and slides, either colors or B&W; 22mm ultra wide lens capture wide views and put everything in the picture
$34.99
Bestseller No. 4
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