For the past few years more and more of my livelihood has come from photography. I joined NPS in 2014 and have a commercial photography business across several categories. Primarily advertising (stills and lately more video), real estate, events. A few weddings by request, impromptu Engagement sessions, and more personal interest in portraiture.
I have steadily invested profits from my work back into Nikon, and have moved up over the past 10 years from D70-D90-D7000 to full frame now, at D750 and D810. Glass is covered from 14mm-600mm mostly Nikkor with a couple Tokina/Tamron options at particular points.
I don't have client work in hard-news journalism or sports. I do press pool work of a sort, but nothing that would put me in a category as a true newspaper-type photo-journalist.
I've never shot with a D3, D4, D4S.
I do pursue image quality, want to continue to develop my craft, and appreciate advancements in workflow and technology. I demo'd the Samsung NX1 and really appreciated several aspects including 4K, touch-screen AF, responsiveness, and connectivity. I just didn't want to invest in a different system and now Samsung's commitment to DSLR appears questionable. That said, I know my customers will benefit from 4K and I want to future-proof myself against competition while meeting present and future needs of clients in a number of venues.
I also recognize the budget outlay for top of the line will be double what I am accustomed to paying.
For those who shoot both 810 and D4S etc, what do you appreciate in each and what are you able to accomplish with the D4S -- and soon the D5 -- that you cannot with the 810?