This is at 100% magnification using Aperture's Loupe. Does anyone know what the maze-like pattern is showing in the middle (and more clearly towards the right side)? The this is a shot of an SB-800 pointing towards the camera. Here's the same pic zoomed out a little bit. This isn't a serious shot anyways -- just playing around so it's no big deal, but I'm just curious what that is/is caused from.