If that's true, it would be awesome as the Z6II is only about a half a stop behind the D5 for low light performance. If the Zf is actually a stop better than the Z6 II (a bit hard to believe) then it would be a better low light camera than the D5 which is still about as good as it gets.as an aside, Ricci said (on the Gray's video) the Zf is about a stop better in low light than the Z6ii(!?!), which is in turn about a stop better than the Z9. he said this was due to the Expeed7. very interesting imo