---
title: kCGImageSourceGenerateImageSpecificLumaScaling
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagesourcegenerateimagespecificlumascaling
---

# kCGImageSourceGenerateImageSpecificLumaScaling

## Declaration

```swift
let kCGImageSourceGenerateImageSpecificLumaScaling: CFString
```