1. A method for determining a depth measurement associated with a scene captured by an image capture device, the method comprising: receiving a first image and a second image of the scene captured by the image capture device, the first image being captured using at least one different camera parameter than that of the second image; selecting a first image patch from the first image and a second image patch from the second image, said selected patches corresponding to a common part of the scene captured in each of the first and second images; determining from the selected image patches which of the selected image patches is a more focused representation of the common part of the scene captured in the patches; calculating at least one value based on a combination of the data in each of the first and second image patches, said combination being dependent on which of the image patches is determined to be the more focused image patch; and determining the depth measurement of the common part of the scene from the at least one calculated value.