Dpreview published a Nikon Z6 4K video bartage and impressed with the results. In terms of video performance, the mid-range full frame mirrorless camera outshines the Nikon Z7 and similar to Sony a7 III.
The Nikon Z6 sample bartage below was all shot hand-held with in-body IS turned on using the Auto AF area mode and Fulltime autofocus (AF-F).
From Dpreview Nikon Z6 4K video bartage results :
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 bartage looks very similar to its 4K APS-C cropped bartage. There may be a bit of a noise penalty using the later, but detail is broadly similar.
The Z6’s full-frame 1080/24p looks better both than the Z7’s full-frame 1080/24p and than the a7 III’s 1080/24p. As a whole, the Z6’s HD bartage has much more sharpening applied than the a7 III’s, but it doesn’t necessarily show much more tangible detail. This is also the case when comparing the Z6’s 1080/120p to the a7 III’s.
You can also find their video still for comparing the Z6’s various video modes to those of its peers, including its most direct competitor, the Sony a7 III.