I shot both of these photos with my D300 with the 18-200 Nikon lens at 26mm - f/4.5. I tried AF fine tuning on them. In this first picture (AF tune @ +10) the image is clear towards the right-center but blurry on the left. Strangely, with AF tune @ -5, the clarity is reversed from the above picture. It is now clearer on the left and more blurry towards the right-center. Can anyone figure what's going on? The subjects are far enough away where depth of field should not be an issue.