I dug out the D810 yesterday for family gathering. Shot my sister's grand-kids with the 24-70 and a few with the old 105 Ais. Despite a few misses because of difficult focusing in low light, I'm still very impressed with this small very light lens.
Flash perception is an exercice I do in the morning. The first thing that catches my eyes is captured. No obligation to seek the beautiful, just catch the light and the object, as usual as it can be.