[unable to retrieve full-text content]In our first two Nikon D850 Field Tests (you can read Part I here and Part II here) we looked at the full-frame DSLR primarily as a stills camera. In the newly-published Nikon D850 Field Test Part III, I have taken a look at it as a video camera. The Nikon D850 includes a built-in 4K time-lapse mode, which …