The Nikon Z6 full frame mirrorless camera is expected to be released on November 30th. You can pre-order now at B&H Photo/Adorama/Amazon. Both dpreview and Photonstophotos has tested the image quality and dynamic range of Nikon Z6 camera:
The results of the Z6 and 50mm S lens are impressive, with consistent performance across the frame. The anti-aliasing filter appears a bit stronger than the Sony a7 III, which means a bit less detail but less occurrence of false color.
While fine detail isn’t as well preserved at low ISO or at high ISO as the best of its peers, the Z6 generally strikes a nice balance between noise and detail. Low light Raw performance is competitive with the best of its peers, which is to say it’s essentially class leading.
PhotonsToPhotos also published their Nikon Z6 sensor dynamic range measurements. Here are the dynamic range comparison for the Nikon Z6 Vs. Nikon Z7 Vs. Nikon D850 Vs. Nikon D750. It seems that Nikon Z6 has the best Dynamic range at high ISO.