Nikon has revealed the D810A, an astrophotography-focused version of its D810 full frame DSLR. Though the new camera will retain many of the specifications of the 36.3-megapixel camera it's based on, ...

While updating to this version reduces the bright spots customers have noticed in long exposures, it does require that an imaging adjustment be performed by a Nikon-authorized service representative.

Last month, I took the Nikon D810 out on the Sierra High Route — one of the toughest adventures around. It got dirty, wet, and constantly banged around. Here’s how it performed. Three years ago, my ...