 The apparent resolution of images in this interpolated mode lay somewhere between 6.17 megapixels and the 12.34 megapixel interpolated output.Second, it uses two photodiodes in each photo site when capturing an image at full resolution, with a primary sensor providing the normal sensitivity of a CCD sensor and another which is smaller and less sensitive.The purpose of this scheme is to provide greater resistance to the gross overexposure of highlights which is more common among digital cameras than film cameras.