---
title: photoEffectTonal()
framework: coreimage
role: symbol
role_heading: Type Method
path: coreimage/cifilter-swift.class/photoeffecttonal()
---

# photoEffectTonal()

Adjusts an image’s colors to black and white.

## Declaration

```swift
class func photoEffectTonal() -> any CIFilter & CIPhotoEffect
```

## Return Value

Return Value The modified image.

## Discussion

Discussion This method applies a preconfigured set of effects that imitate black-and-white photography film without significantly altering contrast. The photo effect tonal filter uses the following property: The following code creates a filter that produces a grayscale image: func photoEffectTonal(inputImage: CIImage ) -> CIImage {     let photoEffect = CIFilter.photoEffectTonal()     photoEffect.inputImage = inputImage     return photoEffect.outputImage! }

## See Also

### Color Effect Filters

- [colorCrossPolynomial()](coreimage/cifilter-swift.class/colorcrosspolynomial().md)
- [colorCube()](coreimage/cifilter-swift.class/colorcube().md)
- [colorCubeWithColorSpace()](coreimage/cifilter-swift.class/colorcubewithcolorspace().md)
- [colorCubesMixedWithMask()](coreimage/cifilter-swift.class/colorcubesmixedwithmask().md)
- [colorCurves()](coreimage/cifilter-swift.class/colorcurves().md)
- [colorInvert()](coreimage/cifilter-swift.class/colorinvert().md)
- [colorMap()](coreimage/cifilter-swift.class/colormap().md)
- [colorMonochrome()](coreimage/cifilter-swift.class/colormonochrome().md)
- [colorPosterize()](coreimage/cifilter-swift.class/colorposterize().md)
- [convertLabToRGB()](coreimage/cifilter-swift.class/convertlabtorgb().md)
- [convertRGBtoLab()](coreimage/cifilter-swift.class/convertrgbtolab().md)
- [dither()](coreimage/cifilter-swift.class/dither().md)
- [documentEnhancer()](coreimage/cifilter-swift.class/documentenhancer().md)
- [falseColor()](coreimage/cifilter-swift.class/falsecolor().md)
- [labDeltaE()](coreimage/cifilter-swift.class/labdeltae().md)