Bernard I frankly don't care what the marketing BS says: the reality is I have direct experience with a good friend who has already seen the memory slot fill with water. Yes he dunked it, but only momentarily. In point of fact the camera battery compartment also filled with water! And the camera is DEAD. So, no. I do not consider the camera 'sealed' and especially not compared to a 1Ds mk3 or D3/4.
As I have already posted (and I'm getting tired of repeating myself) I had a d800e for a week and have serious doubts about its sealing after using it. Heck just look at the flash and tear joystick! Weather sealed? Laughable!
Weather sealed (ability to resists normal exposure to rain) and water proof (ability to withstand immersion) are 2 different things, correct?
A camera that is water proof is of course weather sealed, but you cannot say that a camera that is not water proof is therefore not weather sealed, correct?
-> It must be my Cartesian education, but I don't understand why you keep quoting an issue resulting from lack of water proofness as a proof of lack of weather sealing .
I understand you generic concern trusting important work to a new platform, but I would say that overall Nikon has an excellent track record in terms of delivering on their promises on the water sealing front. On the 4 points you quoted:
- it seems we now agree that the memory card has weather sealing on it (that is important because at least you won't lose the images you already took),
- you have to look real well to see it, but the battery door has a seal on it also, the whole area at the edge of the battery door is a seal,
- the joystick is sealed as well, you can also see this on the image provided,
- the flash is not and might die but there is no reason to think it would affect the functioning of the rest of the camera because it is mechanically isolated from it.