Full production Canon EOS 6D Mark II camera bodies have started hitting the desks of reviewers. With that, we are also seeing a lot of sample images and sensor talk.
DPReview has completed a dynamic range test and have found that the EOS 6D Mark II isn't a step forward in this regard. Base ISO dynamic range is not as good as the EOS 6D in early tests, though the EOS 6D Mark II does squeak out slightly better dynamic range performance at higher ISO's than it's predecessor.
From DPReview:
….it seems the benefits that appeared in the sensors used in the EOS 80D and EOS 5D IV have not been applied to the latest EOS 6D II, and the new camera has less dynamic range than we've become used to. Graphs plotted by regular DPR collaborator Bill Claff illustrate this pretty clearly. In this article, we're taking a look at what this might mean for your images. Read the full test
Obviously dynamic range isn't everything and the sensor is more capable than that in the EOS 6D, but it is a bit disappointing there hasn't been a bigger advancement from Canon in this regard.
You can also check out samples from DPReview: Image Samples | Video Samples