![]() The D810a does not have built-in GPS, but it does have a built-in eyepiece cover so you can't ever lose it. An exposure delay of 1, 2, or 3 seconds can also be programmed. It is available only in "Mup" mode (Mirror Lock Up) and must be used with M or M* exposure mode. The electronic front-curtain shutter, which can be accessed under d5 in custom settings, eliminates vibrations from mirror slap and the mechanical shutter opening. So the premium for the astrophotographic version is $1,000. The Nikon D810a costs $3,796 at B&H, compared to the price of a regular D810 at $2,796 at B&H. The camera's excellent high-ISO performance will benefit starscape, panorama, and time-lapse photographers who will really appreciate its built-in intervalometer, time-lapse function that creates movies, electronic front curtain shutter, and virtual horizon.ĭeep-sky astrophotographers will love the camera's low noise, hydrogen-alpha sensitivity, and excellent dynamic range. Nikon says the D810a has "the best image quality in the history of Nikon digital SLR cameras" and I found this to be true. The D810a was announced in February of 2015. Canon's first astro DSLR, the 20Da was announced in June of 2005, and its replacement, the 60Da, in March of 2012. It took Nikon almost ten years to come out with an astrophotographic camera to compete with Canon. For astrophotography of those beautiful red emission nebulae, the modified long-wavelength filter passes 4 times more of the hydrogen-alpha than a regular D810. The high image quality of the D810a comes from the excellent low-noise performance of its sensor. I tested one on loan from Nikon for a review that appeared in the February 2016 issue of Sky & Telescope magazine. ![]() The D810a does not have the "star eater" problem of early Nikon DSLR cameras where Nikon applied a blurring filter to remove noise which also removed faint stars. With the D810a, Nikon has finally come out with a true astrophotographic DSLR camera with a modified long-wavelength filter that passes more of the hydrogen-alpha wavelength at 656.28 nanometers in the deep red portion of the visible spectrum. The Nikon D810a Astrophotographic Camera is a full-frame DSLR with a 36 megapixel sensor and modified long-wavelength filter that passes four times the amount of hydrogen-alpha wavelengths as a normal D810.
0 Comments
Leave a Reply. |