---
title: kCGImagePropertyExifFlashEnergy
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertyexifflashenergy
---

# kCGImagePropertyExifFlashEnergy

The strobe energy when the image was captured, in beam candle power seconds.

## Declaration

```swift
let kCGImagePropertyExifFlashEnergy: CFString
```

## See Also

### Flash Information

- [kCGImagePropertyExifFlashPixVersion](imageio/kcgimagepropertyexifflashpixversion.md)