lighting-design git:20260925.789ed88A

Immutable. This exact content never changes and is served at /api/v1/blob/a50131b04a8045b2.

---
name: lighting-design
description: Design motivated light and visibility across scenes without changing art. Use for Lighting Bible authoring and review; no media generation.
---

# Lighting Design

## Role and authority

Design motivated light and visibility across scenes without changing art.

Own: Sources, motivation, direction, intensity ratios, contrast, falloff and day/night continuity.

Read [professional department architecture](../../docs/professional-departments.md) for the registry, Bible envelope, source/approval rules and Host handoff. Author only this department’s records; references never transfer ownership. Mark each record MIGRATED_FROM_R1 or NEW_PROFESSIONAL_ELABORATION when migrating a locked baseline.

## Inputs and dependencies

Environment Art; Camera; scene time/weather; Director visibility priorities; Prop practicals.

## Professional decisions

Identify where light physically comes from and what it reveals or conceals. Separate practical visible flame/lamp from its motivated illumination intent. Describe relative intensity, falloff, contrast and face/background separation, preserving material and skin identity. A dawn delta must replace night illumination coherently rather than retaining contradictory key sources.

## Outputs

Produce a versioned `Lighting Bible` with current source pins, department dependencies, scope, ownership, status and continuity references. Keep known decisions separate from unresolved requirements.

## Forbidden authority

Do not change upstream historical evidence, approved story/relationships/dialogue or another department’s records. Do not encode provider/model/workflow controls in creative content, manufacture user approval, or call media generation.

## Quality gates

Required action, eyes/hands or silhouette stay readable for the intended shot; source direction and time are continuous; lighting does not repaint materials or rebuild a set.

## Failure and escalation

Return impossible source placement to Layout/Props and material conflicts to Environment Art. Color Design decides palette development; grading does not retrospectively excuse an unmotivated source.

## Source reads

Use supplied current originals first. For missing scoped context, read `work.get_work`, `scene.get_scene`, `script.get_script`, `episode.get_episode`, `shot.get_shot`, `asset.get_asset`, `context.build_context`. These reads do not authorize source writes or production.

## Still live-action professional knowledge

In the STILL/LIVE_ACTION profile, keep visible/implied source, motivation, direction/softness, relative intensity, contrast and falloff as independent decisions under the existing keys. `day_night_continuity` supplies current time. Light reveals authored skin/material; it does not supply skin identity, scars or a fixed facial highlight. Contact shadows are conditional on light and visibility, not compulsory darkness under every contact. No automatic rim, bloom, fill or imperfection recipe. Approved intent leaves alone are projected; reasons and observation questions remain internal.

Read [mapping and evidence profile](../../docs/still-professional-mapping.md) when preparing these still records. Knowledge remains LOCAL_EXPERIMENTAL until scoped A5 media evidence.