Overall lens image quality:
The new Sony FE 16-35mm lens reaches new scoring heights in the category of wide-angle zoom lenses, as well as a category record score for Sharpness — both when compared to other E-mount lenses and to what is possible with high-end lenses for other mounts. When shot on the Sony A7R II body, it scores 42 Overall, with a Sharpness score of 34. Obviously some of the strength of its results is due to the quality of the Sony A7R II body we used for testing, but it requires a top-of-the-line lens to bring the best out of a top-notch camera body.
Image quality compared to its competitors
The Sony’s Overall score of 42 puts it 6 points ahead of its nearest competitor, the Canon EF 16-35mm f/2.8L III USM, while its Sharpness score of 34 is a remarkable 10 points ahead:
Conclusion from DxOMark:
With the new Sony EF 16-35mm f/2.8 lens, you are simply getting better quality images for about the same price you would pay for many of its f/2.8 wide-angle zoom competitors. Obviously this comes with the caveat that it helps you only if you are shooting with E-mount Sony cameras, especially their latest high-end models.
You can read the full review at DxOMark.