// Create a CIImage from a file
CIImage flower = CIImage.FromCGImage (UIImage.FromFile ("flower.png").CGImage);

// Create the ExposureAdjust filter
var exposureAdjust = new CIExposureAdjust ()
{
	Image = flower,
	EV = 2F // Default value: 0.50 Minimum: 0.00 Maximum: 0.00 Slider minimum: -10.00 Slider maximum: 10.00 Identity: 0.00
};

// Get the resulting image from the filter
var output = exposureAdjust.OutputImage;
	
// To render the results, we need to create a context, and then
// use one of the context rendering APIs, in this case, we render the
// result into a CoreGraphics image, which is merely a useful representation
//
var context = CIContext.FromOptions (null);

var cgimage = context.CreateCGImage (output, output.Extent);

// The above cgimage can be added to a screen view, for example, this
// would add it to a UIImageView on the screen:
myImageView.Image = UIImage.FromImage (cgimage);