Today with my K7, I was playing with macro / extension tubes. As you can see from the picture, I am getting bright spots in the center of the photo. It is not being caused by the flash, as I tried a couple without flash. Also tried a couple different lenses, but it's there. It doesn't appear (that I can see) under normal situations, only when playing with macro. I've used this exact combo on my *istD, and never seen this. Is there something in the settings on this camera that I need to adjust? It's also there in Live View.