I bought some new camera equipment this last week, two of these are the new Nikon D4 and 400mm F2.8. Took it out for the first time and notice the photo's were not very sharp, it was a hazy and rainy day not sure if that could affect it. The 200mm F2 I bought at the same time is extremely sharp. I actually read the instruction manual and have found no real answers. Anyone else have this set up?
Did you try the AF fine tune?