A reasonable guess would be something between 95 and 98 per cent film. Although I have a D800 - purchased new in 2012 (?), and take it with me on my "landscape excursions," the nod generally goes to my Hasselblads, or one of my Nikons (if I'm shooting macro or wildlife). As an aside, the cards in the D800 are set at "raw/jpeg," and the most recent cards installed, have images dating from December 2013 to May 2017, with, currently, 153 "shots" remaining on a pair of 16GB cards. PanF+, FP4+, Tri-X, and Ektachrome seem to win out almost all the time. Go figure...