Fujifilm FUJINON XF 18mm F1.4 R LM WR

Measured against Fujifilm mirrorless 40 MP, APS-C: The angle of view of the weather-sealed wide-angle lens for 950 euros corresponds to that of a 27 mm KB lens. The resolution in the centre is very high at all three measured apertures, the highest contrast is provided by aperture 2.8...

The fast wide-angle lens with weatherproof housing costs 1000 euros. In the centre of the image, we measured almost the same top value at three apertures. The contrast is also at a very high level throughout. The only thing to criticise is the drop in contrast at aperture 1.4. It is still ok, but visible - and stopping down solves this problem as well...