Get Nikon D810 at B&H Photo.
I took a quick look at Nikon Capture NX-D. After noting the failure to code-sign it for OS X, the non-integration into the App Store, the lovely file name I could not find later (“S-NXD___-010000MF-ALLIN-ALL___.dmg”), the installer errors (in the install log), the installation of crapware without notice or choice (Nikon background notification yuck), spelling errors, grammatical errors, modal operation, non-standard command key shortcuts, the failure to associate NX-D with NEF files—I’m persuaded that this warmed over turd emits more or less the same aroma as its its predecessors. And that Nikon and Sigma must have some secretly guarded source of software engineers simply unavailable to companies like Apple. Still, it’s a big step up from Sigma Photo Pro 6, which won’t work at all on my Mac Pro.
As for what NX-D excretes (please forgive the expression), I didn’t get beyond the hassles and I’m not sure I want to try. Maybe tomorrow or next week.