Nikon D810A Firmware Update
Nikon D810A 36.3Megapixel 1080p FX-Format DSLR Camera Nikon D810A Firmware Update – The Nikon D810A is a particular version of the ordinary D810 that has been modified for certain types of astrophotography. The infrared wedge filter has been optimized to allow transmission of alpha hydrogen spectral lines, producing sensitivity four times greater than the wavelength of 656nm. … Read More »