# RenderExposureAdaptation

> Talos next · Since 0.7

Partial adaptation of HD's auto exposure: how far a dark scene is brightened.

Every field is optional.

## Fields

| Field | Type | Required | Default | Allowed values | Description |
|---|---|---|---|---|---|
| `strength` | `number` | no |  |  | How much of the metered darkness auto exposure corrects, 0..1. 1 brightens a dark scene all the way (full adaptation); 0.6 (default) brightens a scene 3 stops under `referenceEv100` by 1.8 stops; 0 does not brighten it at all. |
| `referenceEv100` | `number` | no |  |  | The scene key (EV100, -4..20) at and above which auto exposure adapts fully: 15 (default); 12 is bright daylight, a forest interior meters 13-14. A scene metered below it is brightened only `strength` of the difference. Scenes above it are unchanged. |