Dpreview confirms Z6 has much better video quality than the Z7

Dpreview writes:

The Z6 and a7 III are taking different approaches to their oversampled 4K output with the Sony doing a better job capturing fine detail. The Z6 on the other hand looks to be using larger-radius sharpening (by default) which results in a punchier look out of camera. As expected, the Z6’s full-frame 4K looks better than the Z7’s full-frame 4K, which doesn’t use all its pixel rows, reducing both resolution and low-light performance.

The Z6’s cropped 4K also appears to use larger-radius sharpening than the Sony’s and looks similar (but still slightly better) when compared to the Z7’s. Interestingly the Z6’s 4K full-frame footage looks very similar to its 4K APS-C cropped footage. There may be a bit of a noise penalty using the later, but detail is broadly similar.

Nikon Z links:
Nikon Z7 at BHphoto, BestBuy, Amazon, Adorama, Calumet Germany. WexUk. Jessops. CameraPro.
Nikon Z6 at BHphoto, BestBuy, Amazon, Adorama, Calumet Germany. WexUk. Jessops. CameraPro.
Nikon 24-70mm at BHphoto, BestBuy, Amazon, Adorama, Calumet Germany. WexUk. Jessops. CameraPro.
Nikon 35mm at BHphoto, BestBuy, Amazon, Adorama, Calumet Germany. WexUk. Jessops. CameraPro.
Nikon 50mm at BHphoto, BestBuy, Amazon, Adorama, Calumet Germany. WexUk. Jessops. CameraPro.
Nikon FTZ adapter at BHphoto, BestBuy, Amazon, Adorama, Calumet Germany. WexUk. Jessops. CameraPro.