---
title: concentration
framework: coreimage
role: symbol
role_heading: Instance Property
path: coreimage/cispotlight/concentration
---

# concentration

The size of the spotlight.

## Declaration

```swift
var concentration: Float { get set }
```

## Discussion

Discussion The smaller the value, the more tightly focused the light beam.

## See Also

### Instance Properties

- [brightness](coreimage/cispotlight/brightness.md)
- [color](coreimage/cispotlight/color.md)
- [inputImage](coreimage/cispotlight/inputimage.md)
- [lightPointsAt](coreimage/cispotlight/lightpointsat.md)
- [lightPosition](coreimage/cispotlight/lightposition.md)