The succesive zooms are from an area around or near the centre of the previous image with one exception, indicated below.
Total magnification is given for each image.
Maximum number of iterations is set to 30000 for all images, although this is unnecessarily high in some cases. Notice the rich inner structure, from which details are chosen in the following images. If you look at this image in full size you will notice the enormous amount of details to be explored. The small rectangle somewhat to the right and upwards from the center shows the region covered by the next image. 21 Details have vanished, of course, but that is not all.