There are some subtle but nice design changes from the D800 to the D810.
Though it looks relatively small here -- and it is, compared with Sony and Canon's competing cameras -- the Nikon D810 is still a little bigger than the older D800.
Nikon improved the grip for the D810. The D800's is fine, but you don't realize how much better the D810 feels until you compare.
In addition to getting a new Flat Picture Control that opens up midtones, you can now control the settings in 1/4-step increments.
No changes in terms of ports, although the button for the autofocus modes now has a different texture.
The Nikon D810 retains the CompactFlash/SD card slots of the D800.
The metering switch that used to be located around the AE-L/AF-L button is now a button elsewhere.
The metering button now sits above the release-mode dial.
The i button, which provides access to some less frequently used settings, migrates up from lower-end models.
Everything on the top of the camera remains unchanged.
The bracketing button has been moved from the release mode dial button group to a spot by itself for easy left-hand operation.
Read more about the Nikon D80.
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