The D810A, that captures nebulae emitting with the H-alpha wavelength in red, employs an FX-format CMOS sensor without optical low-pass filter, the same as the D810, realizing superior definition and smooth tonal gradation. The ultimate resolving power among Nikon’s digital SLR cameras provided with 36.3 effective megapixels enables breathtaking astrophotography. Also, the latest image-processing engine, EXPEED 4, delivers amazingly clear coloration and rich gradation with depth from black to white. The quality of astrophotography you can achieve has been elevated to a level you’ve never experienced before.