17mm Comparisons: f2.8 (resolution)

Canon 16-35mm f2.8 (centre)	Nikon 17-35mm f2.8 (centre)

Commendable centre frame resolution from the Canon, less impressive from the Nikon. But before leaping to conclusions, here's a corner.

Canon 16-35mm f2.8 (corner)	Nikon 17-35mm f2.8 (corner)

The reversal of the centre-frame verdict is in line with the results of the Nikon 14mm test: both Nikon lenses are tricky to evaluate comparatively because the field of focus is far from flat: wide open, the Nikon is softer centre frame, but has superior contrast and corner resolution.