October 28, 2026
Object Source Lighting for Beginners: Planning a Believable Glow
Object-source lighting (OSL) is the illusion that an object on a miniature—such as a lantern, glowing blade, magical orb or engine—casts colored light onto nearby parts of the figure. The easiest way to make it believable is to plan the source, identify what it can actually illuminate, and keep distant surfaces darker. A neon wash over the whole model is not lighting. The glow must follow geometry, distance and the intended mood.
Identify the light and its reach
Choose the exact emitting surface, not just the general area around it. A wizard’s orb might be a small sphere beside the hand; a lantern is a compact enclosed lamp; a sword has a long narrow blade. Decide whether the source is bright enough to overpower the ordinary light falling on the miniature. The closer the receiving surface, the stronger the visible color may be. Surfaces hidden behind other parts should not receive the same light as exposed areas.
In a hypothetical scene, a blue spellbook held at chest height could tint nearby fingers, the front of the cloak and the lower face. The back of the head and the rear cape remain mostly under the scene’s original light. This illustrates placement, not a claim about a tested model.
Establish the normal painting first
Paint the figure’s base colors, ordinary shadows and major highlights before adding glow. If you start with a large saturated area, it becomes difficult to tell what the magical source is adding. Keep dark regions available for contrast. Paint a small source with a brighter center surrounded by a more saturated outer region; the exact colors depend on the narrative. A vivid blue source could have a very pale cyan or off-white focal highlight.
Check the intended light direction with a lamp or sketch. Real shadows already help explain the miniature, so OSL should modify those relationships rather than replace them arbitrarily.
Place reflected color with small, deliberate marks
- List surfaces facing the emitting object: palm, chin, nearby armor edge, adjacent cloth fold.
- Put a stronger tint on surfaces very close to the source.
- Fade the tint across farther regions rather than painting an equal halo everywhere.
- Keep occluded surfaces dark, especially behind shields, collars or shoulders.
- Use a test miniature to check whether the color shift reads as light rather than a spill.
A translucent glaze over dried base colors can add the tint without destroying the original shading. Test the glaze consistency on scrap and use a medium compatible with its acrylic system. Avoid pooling color into deep creases unless the source would actually illuminate those creases.
Make the source brighter than the reflected area
The common failure is a glowing hand brighter than the lamp it holds. Reserve the highest value for the emitter. Its nearby illuminated surfaces may be saturated but generally should not compete with the center of the light. Keep the reflected highlight narrow on shiny armor and broader on matte cloth if that suits the story.
Consider colored light on the original paint. A blue lamp over red cloth does not necessarily turn the cloth pure cyan; the reflected color can be muted and mixed visually with the underlying fabric. Try a small sample before committing to an extreme contrast.
Diagnose the result at tabletop distance
If the miniature appears dipped in colored ink, reduce the affected area. If the orb looks merely painted blue, increase contrast between its brightest center and the dark surroundings. If the glow ignores anatomy, restore occluded surfaces with the original base colors. A small clean highlight on a chin facing the spell may communicate more illumination than a large foggy patch on the entire cloak.
OSL can be subtle. First ask whether the viewer recognizes the source and its nearest illuminated surfaces. Once those two points read clearly, adding more glow may weaken the effect.
Finish while preserving the illusion
Photograph or inspect the model under stable neutral lighting. Strong colored room lights can mask the painted effect. Choose a protective finish appropriate to your paint system and the intended surface texture, and test it on spare material; a change in gloss may alter how reflections look. Keep notes on the source’s color, falloff and brightest point so repeated figures in the same scene look coherent.
Explore the Miniature Painting and Basing guides, the miniature hobby category, and the Hobby Articles directory. Review the drybrushing guide for complementary brush technique.
