Just had this happen to me this weekend. I shot outside in bright sunlight and forgot to dial in ND Filter 4, instead shooting on Filter 3 with the lens stopped down to a very small opening. It was so bright shooting that it was difficult to see a good picture in the viewfinder. When the aperture on the kit lenses for this camera is closed down to a very small opening, the picture will be blurred, especially on wider shots. (iris blade diffraction?) It looks just like a back focus issue, but worse as you noticed. The trick is to dial in Filter 4 to get the aperture opened wider and even throwing an extra ND or a polarizer on the lens. The sweet spot for these lenses seems to be around f-5.6 to f-8. The smaller the opening, the fuzzier the picture. I figured this out years ago but it still catches me once in a while...like this weekend for instance.