Thanks for all the replies.
I did not use the fine tune setting, but was thinking abut doing so.
And the the compensation was not altered from 0.
We have for a change some snow here in Copenhagen, so I did a test like Bjørn.
I have 3 cameras, D700, D800 and the D500, using the same 24-70 F2.8 set on f5.6 and 24 mm on all three cameras, and then a picture of my garden.
From the three picture I can see that already the D800 has some change to the exposure, all three was in matrix metering.
The crops are made from RAW files, and exposure has not been changed in Lightroom.
The +1 compensation seems a bit too much for thise pictures, in Lightroom a +0,5 was enough, but LR's automatic mode did a +1 for the D700 and +1.65 for the others, this however changed the colour of the D800 NEF file to be very reddish and not natural.