Canon screwed up with the release of the first 6D . making it really at the level of 5d3 (noise, equal, ductility) . But 6DII they corrected themselves and made real nonsense not in general, but in part (shadows, ductility of the rav in bad conditions) . . and the difference in the ductility of a rav with 5d4 and 6dII is quite large! 6d2, as it were, makes noise in the shadows themselves, even at ISO 100-200, and if you start pulling shadows from these shadows themselves, this is where the noise will appear like on a crop. In good conditions, this is not very noticeable)
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