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  "title" : "exposureAdjust()"
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# exposureAdjust()

Adjusts an image’s exposure.

```
class func exposureAdjust() -> any CIFilter & CIExposureAdjust
```

## Return Value

The modified image.

## Discussion

This method applies the exposure-adjust filter to an image. The effect uses multiplication of color values to simulate the change of exposure within the photo.

The exposure-adjust filter uses the following properties:

- `ev`: A `float` representing the amount to adjust the exposure as an <doc://com.apple.documentation/documentation/Foundation/NSNumber>.
- `inputImage`: An image with the type [`CIImage`](/documentation/CoreImage/CIImage).

The following code creates a filter that adds brightness to the input image:

```swift
func exposureAdjust(inputImage: CIImage) -> CIImage {
    let exposureAdjustFilter = CIFilter.exposureAdjust()
    exposureAdjustFilter.inputImage = inputImage
    exposureAdjustFilter.ev = 2
    return exposureAdjustFilter.outputImage!
}
```

![Two versions of a photograph side by side. The photo on the left shows a small bunch of flowers photographed close up, in focus, with good light and no effects. In the photo on the right, an exposure-adjust filter is applied, resulting in a brighter image.](images/com.apple.coreimage/media-3545001@2x.png)

---

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