---
title: radialLookupTable
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/lensdistortiondata/radiallookuptable
---

# radialLookupTable

A linear interpolation lookup table from the center to the maximum distance corner of the image.  This describes the magnification of radius at a given radius. This is the same structure as lensDistortionLookupTable in AVCameraCalibrationData and can be used in a similar manner, with the data already converted into a float array.

## Declaration

```swift
let radialLookupTable: [Float]
```