Since each color is sampled at each pixel, the resolving element of the system is the pixel, making the stated resolution of the system equal to the resolution of
the image sensor. This means that an image captured by a 2048 x 2048 sensor maintains its 2048 x 2048 resolution. Also note that the saved file size did not change, it just contains more measured data. The
results are visibly noticeable (see Figure 4).
One drawback to this method is that if the image is changing with time, the sequential image capture will produce an image with red, green and blue ghosts of
your subject as it moves across the scene. Another possible concern is image exposure and capture time. This method triples the time, so if it is an issue with a single shot, it will be more of an issue with the
three shot method.