Nikon D810A FX-format Digital SLR http://amzn.to/1JV8mR4Discover how to master any SLR Camera http://bit.ly/1IZx2IQ Learn How to get paid taking Photos http://bit.ly/1dj40XD The Nikon D810A is a specialized version of the regular D810 that has been modified for specific types of astrophotography. The infrared (IR) cut filter has been optimized to allow transmission of the hydrogen alpha spectral line, resulting in four times greater sensitivity of the 656nm wavelength. The resulting images capture the brilliant red hues of diffuse nebulae and constellations in striking detail and fidelity. While not recommended for general photography, the D810A is an excellent option for photographing the universe with either NIKKOR lenses or third-party adaptors for telescopes.A new Long Exposure Manual Mode is implemented, giving users the ability to set shutter speeds from 4, 5, 8, 10, 15, 20, 30, 60, 120, 180, 240, 300, 600 or 900 seconds (15 minutes), as well as Bulb and Time settings. Building upon the D810’s excellent low-light capabilities, the ISO range has been optimized from 200 to 12,800 (Hi-2 51,200), for maximum sensitivity with the optimal signal to noise ratio.The D810A also adds a new Virtual Exposure Preview Mode, which displays an estimated preview image and is available when shooting at shutter speeds longer than 30 seconds when in Live View. The#Nikon D810A FX-format Digital SLR#Nikon D810A,Nikon D810A SLR#Nikon D810A FX-format SLR digital#Nikon D810A FX Digital SLR

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