DxOMark published their test results for the Nikkor Z 14-30mm f/4 S mirrorless lens (Adorama | B&H | Amazon). Here is their conclusion:
With its ultra-wide angle of view and truly compact dimensions, the Nikkor Z 14-30mm F4 S is without doubt a highly appealing solution. Couple that with a flat front and the ability to add 82mm screw-in filters, and the new Nikkor seems ideally suited to landscape and travel photography. While open -perture performance is a bit lacking, the lens performs pretty well only one stop down at all focal lengths, including at the vaunted 14mm focal length.
With the mirrorless Z cameras’ in-body stabilization, using F5.6 with a low ISO might not be that challenging, and it is of course of little or no consequence when used on a tripod. Given the choice between it and a lens with more limited coverage or a much heavier and larger lens with better open-aperture performance, the Nikkor Z 14-30mm F4 S seems to strike a happy medium. And with a price of around $1300, it shouldn’t be overlooked.
Via DxOMark