1. A method of modifying blur in at least a part of an image of a scene, said method comprising: capturing at least two images of the scene, said images being captured with different camera parameters to produce a different amount of blur in each of the captured images; selecting a corresponding image patch in each of the captured images, each of the selected image patches having an initial amount of blur; calculating a set of frequency domain pixel values from a combined function of Fourier transforms of two of the selected image patches; raising each of the pixel values in the set of frequency domain pixel values to a predetermined power, thereby forming an amplified set of frequency domain pixel values; and combining the amplified set of frequency domain pixel values with the pixels of the selected image patch in one of the captured images to produce an output image patch with blur modified with respect to the initial amount of blur in the image patch, wherein the amount of modification with respect to blur varies across different regions of the image patch.