Switched from modded Canon T3 to Nikon D810, was originally thinking about the D810A but wanted a setup that could do Astro and Landscapes. Quite satisfied with my decision and pleased with my Alaska Northern Lights pictures. Only regretted not buying the Nikkor 14-24mm f2.8 ED lenses as the Tokina 16-28 mm had quit a bit of coma at the edges. The camera is a bit heavy but with a nice manfrotto head and slik tripod, my pictures turned out remarkably well. Battery life was good even when the temperature plummets to -24F. I have used this body for 5 months so far using various lenses including large telescopes to capture galaxies, nebula, aurora, and landscapes with excellent color and resolution. I find it much easier to use rather than using my specialized ccd cameras that cost 3x's the cost of this body. Paired with a quality lense, this camera will allow you to capture some stunning images. I did buy a wireless shutter controller while up in Alaska which helps not only for Astro but distant animal photos. There was a learning curve making the switch from Canon to Nikon but so far it has been worth it. I still might consider buying the D810A version but it would be exclusively be used for Astro images.

There are some nice features to this camera, and it can produce some quality images. The one thing you don't find disclosed in the product description though is that the Raw files produced by this camera, probably will not be recognized by your computer, or a lot of software. So until you can update your operating system and your software, you are forces to convert you RAW files to DNG files before you can process them. I know this is due to the camera having an advanced image processor, and in time most programs may be updated to where they can be user friendly with the Nikon D810, but it would be nice to be made aware of this before you purchase the camera. The camera itself is an excellent quality full frame camera, and should be a dependable tool to work with for some time. The overall weight is a little heavy, but if you desire the high resolution as I myself do then you don't mind the weight. Of course this is still almost the same body as the D800, and if you are used to it you should be comfortable with this camera as well. Overall it performs very well, and is a professional quality camera. Other than having to adjust for the inabillity of being able to directly process the RAW files at the moment, I am very pleased with is as a whole.

This is my replacement for Nikon D7000 now I can really do my work especially in low light photography and portraits, also great for action and landscaping. If you are using manual setting you are blessed with this camera. Use only the best lens on this body to enjoy 36 megapixels. Now my life is more happy with a great pictures and true colors compering to canon.

The image quality is excellent and the D810 is built like a tank! You must have good glass to get the most out of this camera, otherwise you will be better of with a lower resolution camera.

This is an spectacular camera I do all kind photography Sports,portraits,real state,Wedding,this camera works perfectly for me, I really recommend this camera,its amazing!!!!!