In this field test, we take Nikon's D810 and D810A to Death Valley to photograph landscapes and night skies with Emmy-nominated astronomer, photographer and educator, José Francisco Salgado. The D810A is a tweaked version of the full-frame D810, and comes with a higher base ISO sensitivity and is specifically designed to capture wavelengths emitted by distant nebulae. Watch our video to find out how José and the cameras performed. This is a DPReview production made possible with the support of Nikon and Amazon. For more: dpreview.com/sponsored DPReview.com is the world's biggest digital camera review website. Welcome to our YouTube channel! Subscribe for new feature videos, reviews, interviews and more. Discover the world's most in-depth digital camera reviews at http://www.dpreview.com/