Sharpness at 18mm

Sharpness at 18mm

The sharpness tests for this review were carried out using a real-world subject rather than a test chart. The AF-S Nikkor 18-35mm f3.5-4.5 lens was attached to a Nikon Df body, which in turn was mounted on a sturdy tripod. Mirror lock-up was activated and a cable release was used to prevent camera shake resulting from tripping the shutter. The 100% crops represent about 1/400th of the total frame area.

The full frame at 18mm

At 18mm the centre is very sharp even wide open at f/3.5, and remains usable down to f16.

The edges are somewhat fuzzy at f/3.5 but sharpen up quite nicely upon stopping down to f/5.6 or f/8.

The f22 setting is best avoided.

Aperture	Centre Crop	Edge Crop
f/3.5
f/5.6
f/8
f/11
f/16
f/22