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The Big Shoebox — Project Summary

The Big Shoebox Project

What Is It

A fully operational pinhole camera built inside a standard 20-foot ISO shipping container. It makes photographs — real, large-format photographs — on contact-scale cyanotype prints measuring approximately 15 feet wide by 8 feet tall. It is transportable, deployable in remote locations, and self-sufficient for water and processing. It is not an installation that resembles a camera. It is a camera.


The Scale

Parameter Value
Image plane (active) 4499 × 2388mm (~14'9" × 7'10")
Container interior 5893 × 2388mm (~19'4" × 7'10")
Image area ~116 sq ft
Focal length 2362mm (container interior depth)
Optimal pinhole Ø2.17mm (Lord Rayleigh formula, λ = 550 nm)
f-number f/1088
Baseline exposure ~30–45 min (Ware New Cyanotype on muslin, f/1088, full sun — no reciprocity correction)
Process Cyanotype (Ware formula) — water-based, non-toxic, no silver
Per-print cost ~$38
50-print run ~$1,900
License GNU AGPLv3 — © 2026 Alvin Richards

The Technology

Two independent movement systems work in series, stacking their effects non-linearly:

Front board — tilt and swing (±5°) The pinhole itself pivots on a spherical plain bearing, steering the image cone across the film plane. Every 5° of tilt shifts the projected image 207mm. Used for compositional placement — not correction, not distortion, but deliberate image steering.

Film plane — 4-corner independent actuation (±42° tilt, ±28.3° swing) Four corners of the image plane move independently via handwheels, enabling view-camera-style geometric control at pinhole focal lengths. Scheimpflug-equivalent movements, compound twisted-plane projections, convergence manipulation — the full vocabulary of large-format photography, applied to a pinhole.

Combined: the two systems interact non-linearly. Their compound optical projections — modeled and documented in the distortion renders — produce images that no other camera type can make.

Every specification traces to a peer-reviewed source or manufacturer datasheet. The optics are not approximated.

Off-grid capable: a self-contained three-circuit water system supports ~10 full-size prints between resupply runs, with 40% water recycling. 12V DC operation. Deployable without power connection.


The Process

Cyanotype on cotton muslin using the Mike Ware New Cyanotype formula (ammonium iron(III) oxalate + potassium ferricyanide). Baseline exposure 30–45 minutes in full sun at f/1088 — 4–8× faster than the traditional Herschel formula. Developed in plain cold water, no silver or hazardous chemistry required.

The container travels by commercial hire truck. No CDL required for the operator. No oversize permits required for an empty 20ft standard container on Interstate highways.


Documents

Document Description
Pinhole Optics Report Lord Rayleigh formula, f-numbers, exposure calculations
Container Optics Detailed optics for the shipping container configuration
Construction Guide Light-sealing, pinhole plate fabrication, image plane loading
Lens Options Coverage problem, thin lens equations, DoF, distortion, recommendations
Lens vs Pinhole Why the exposure difference is ~5,500× — full derivation
Photosensitive Materials All process options, ISO equivalents, spectral response, per-image costs
Processing System Off-grid three-circuit water system design and Bill of Materials
Film Plane Mechanism 4-corner independent actuation — design, drawings, shopping list
Film Clamp Mechanism Cam-lever spring clamp system — 92 clamps at 150mm spacing, parts list
Pinhole Report Interchangeable plate system — wall frame, pinhole plate, lens plate
Tilt-Swing Front Board Spherical-pivot mechanism — design, drawings, combined distortion renders
Cost Breakdown Full itemized build cost — three scenarios, all sources cited
Chem Shopping List 50-print quantities with supplier URLs and confirmed prices
Transportation Commercial hire vs. self-haul analysis
Operating Manual Single-operator step-by-step workflow — coating, exposure, development, cleanup
Electrical & Systems Power architecture, revolving drum light trap, lighting, wiring diagrams
Ventilation & Cooling Fan system, evaporative cooler, light-safe baffle ducts, shade canopy, and operating modes
Master Shopping List All components consolidated by build area — electrical, water, chemistry, drum light trap, cooling
License GNU AGPLv3 — © 2026 Alvin Richards
Light Trap Selection Revolving light trap options, pricing, and custom fabrication specification
Engineering Diagrams All TBS-001 construction drawings — assembly overview, fabrication, subsystems
All Diagrams Complete visual gallery of every engineering diagram on a single page
Distortion Renders Ray-traced projections for all film-plane and tilt-swing configurations
Equipment Layout Shadow-free end-zone layout — optical clearance proof, IBC Y-stacking, new rail positions

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The Big Shoebox - A Humungous Pinhole Camera

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