# Nits

> The unit of luminance (candela per square meter).

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.Rendering](/engine/6000.7/script-reference/unityengine/rendering.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
Nits = 3
```

### Remarks

Describes the surface power of a visible light source. When you use this unit, the overall power of a light source depends the size of the light source, meaning the the illumination level of a Scene changes depending on the size of the light source. Highlights that a light source produces conserve their intensity regardless of the size of the surface.

A light source that emits 1 candela of luminous intensity onto an area of 1 square meter has a luminance of 1 candela per square meter.

Compatible light types: [LightType.Rectangle](/engine/6000.7/script-reference/unityengine/lighttype/rectangle.md), [LightType.Disc](/engine/6000.7/script-reference/unityengine/lighttype/disc.md), [LightType.Tube](/engine/6000.7/script-reference/unityengine/lighttype/tube.md).

Additional Resources: [Light.lightUnit](/engine/6000.7/script-reference/unityengine/light/lightunit.md), [light component](/engine/6000.7/manual/lighting-overview/lighting-birp/class-light.md).