---
title: kCGImagePropertyDNGBestQualityScale
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertydngbestqualityscale
---

# kCGImagePropertyDNGBestQualityScale

The scale factor to apply to the default scale to achieve the best quality image size.

## Declaration

```swift
let kCGImagePropertyDNGBestQualityScale: CFString
```

## See Also

### Quality

- [kCGImagePropertyDNGBaselineSharpness](imageio/kcgimagepropertydngbaselinesharpness.md)
- [kCGImagePropertyDNGLinearResponseLimit](imageio/kcgimagepropertydnglinearresponselimit.md)
- [kCGImagePropertyDNGChromaBlurRadius](imageio/kcgimagepropertydngchromablurradius.md)
- [kCGImagePropertyDNGAntiAliasStrength](imageio/kcgimagepropertydngantialiasstrength.md)
- [kCGImagePropertyDNGShadowScale](imageio/kcgimagepropertydngshadowscale.md)
- [kCGImagePropertyDNGDefaultScale](imageio/kcgimagepropertydngdefaultscale.md)
- [kCGImagePropertyDNGLinearizationTable](imageio/kcgimagepropertydnglinearizationtable.md)