No sooner had I published my glowing review praising the new Nikon D810, when Nikon issued a service advisory about a thermal issue (white dots) affecting the earlier cameras during very long exposures or when using the 1.2x crop mode. Of course my camera had one of the early serial numbers, and although I haven't noticed the problem with it, back to the factory it goes for the free fix by Nikon. If you think you might have one of these early D810 cameras, you can check the serial number on the Nikon Service web site here.
"We have received a few reports from some users of the Nikon D810 digital SLR camera indicating that bright spots are sometimes noticeable in long exposures, and in some images captured at an Image area setting of 1.2× (30×20).
After looking into the matter, we have determined that bright spots may occasionally be noticeable when shooting long exposures, and in images captured at an Image area setting of 1.2× (30×20).
Nikon service centers will service these cameras that have already been purchased as needed free of charge to the customer."
Cameras seem to be coming to market sooner than ever and perhaps without enough field testing. My Fuji X-T1 had to go back for a light leak fix. My Nikon D600 had the sensor spot issue. It doesn't really pay to be the first kid on the block with the new toy.
But here's the good news:
The Nikon D810 is now back in stock at B&H, and they have confirmed to me that all the D810 cameras in their warehouse already have the fix for the thermal issue. So, if you're looking to pick up a new D810, you can do so now at B&H while they last.