Intrigued, I checked my camera. I find that when I press the "magnify" button, I get a tiny thumbnail of the whole image with a yellow box showing the area being magnified. Each repeated press (increasing the magnification) results in the yellow box getting smaller on the thumbnail - representing the increasingly smaller area which you are viewing. This thumbnail disappears quite quickly after the button press. There does not appear to be any way of reliably deciding what the exact magnification is, or the level of increase per successive press. Even setting the multiselector centre button to "magnify" only allows for "low, medium or high" with no indication of exact measurements. Page 218 of the manual gives some figures for the relative magnification for each of the settings though, as well as information regarding "face recognition" - I didn't know it had it!!