Features
Part of Diorama lighting how it works: lumens, lux and color temperature
Six diorama lighting ideas, each teaching one skill
Six diorama lighting ideas, each teaching one skill: a hidden source, window light, firelight, street lamp falloff, two source ratio, and a near dark night scene.
What to take away
- Each project below isolates one lighting idea and can be finished in an evening or two.
- The most useful early skill is hiding the source, because a visible emitter flattens everything.
- Damage from light is cumulative and cannot be undone, so a display piece needs a switch and a shade.
- Measuring light properly is a whole discipline, and you only need the vocabulary, not the instruments.
Six builds, six ideas
- A blank box with one hidden emitter behind a lip. Teaches concealment and spill control.
- A window with light coming from outside. Teaches direction, and why interiors read as interiors.
- A hearth or forge with a warm flickering source low down. Teaches upward light and shadow on faces.
- A street lamp over wet ground. Teaches falloff and specular reflection.
- A room with two levels of light, ambient and a lamp. Teaches ratio between sources.
- A night scene with almost no light at all. Teaches restraint, and how little is needed to read.
Build each one plain. The point is the light, and detail only makes it harder to see what changed.
Six builds and their skills
- Hidden emitterconcealment and spill control
- Windowdirection and interior reading
- Hearthupward light and shadow
- Street lampfalloff and reflection
- Two levelsratio between sources
- Night scenerestraint and minimal light
Why concealment is first
The difference between a lit model and a lit scene is whether you can see where the light comes from. Once the emitter is hidden, everything else in the box starts behaving like a photograph of a real room, because that is how real rooms are lit: by sources outside the frame or shaded within it.
Concealing the light source
- Hide the emitter behind a lip
- Build shade and lip with wiring
- Check that source is not visible
- Confirm scene reads like a real room
The corollary is that the shade, the lip and the beam are parts of the lighting, not decoration added afterward. Build them at the same time as the wiring.
Light is a one-way transaction
Every project puts energy into materials that do not recover it.
The University of Texas at Austin's guidance on light in storage and care states it plainly: light damage is cumulative and nonreversible. Visible and non-visible light energy can drive degradation reactions, such as fading of media and darkening and embrittlement of wood-based papers.
Its control measures apply directly to a display piece: cover or box items when not in use, and use ultraviolet filtering film or filtering glazing where light passes through glass.
Filters and diffusion reduce ultraviolet light but do not eliminate damage completely. The materials it calls extremely susceptible are ones a miniaturist uses constantly: watercolor, marker and colored pencil.
The measurement vocabulary you need
You do not need instruments, but the words help when reading a product page. NIST's description of the realization of the lumen says total luminous flux is realized from the candela using an absolute integrating-sphere method.
NIST developed its integrating-sphere approach in 1995, while most national laboratories use a goniophotometer. The uncertainty of the NIST luminous flux unit is 0.50 percent at a coverage factor of two.
That is the chain behind every lumen figure printed on a package. It also explains why two products quoting the same number can differ: the number is only as good as the method behind it, and most hobby strips are not measured at all.
Working through the set
Do the concealment project first and the night scene last. The explanation of what you are manipulating is in how diorama lighting works, and the equivalent single-skill sequence for building rather than lighting is in projects that teach one skill.
