the horizon was sharp but the centre middle distance were often soft. Which made it for me unpredictable and highly frustrating. Anyway Nikon offered to sort it out as it may have been reassembled incorrectly. One of the issues with this lens is field curvature which can make focusing a real challenge, a hair turn either way can make a difference.
The cropped images are from jpegs straight out the camera unsharpened.
The first 2 images would make perfectly good prints to at least 18 x 12 the last image would show its weakness at 10 x 8.