smartcooky
Penultimate Amazing
I was going to say that I didn't think that was quite it, until you posted this link with terrible, low-res photos of it. I was thinking that the flag posted in the OP had too much white in the middle, and thought the black edges would have made the white area look much smaller on such a low-res photo.
Comparing to other low-res photos, the white actually seems to bleed more into the black, and thereby, increasing the surface area of the white.
At first, I thought that the black pattern in the middle was a hexagon with a round "dot" in each corner. That is what got my attention as I had never seen anything like it on any German flag (the image i posted was a very much enlarged part of a screen grab, like about 10% of the screen area, so very low res)
Well if you take the image norman alexander posted earlier, reduce its resolution to something approaching 10% of a screen grab and bump the contrast and brightness up to simulate a bright, sunny day.............
Voila!!