You asked
Best travel lens for the nikon d810?
For travel on the D810, I'd start with one stabilised zoom that covers wide to short telephoto. The Sigma 24-105mm f/4 DG OS HSM Art is my pick, since its stabilisation helps with dim churches and interiors. If you want something simpler, the Nikon AF-S 24-120mm f/4G ED VR does the same job with a longer reach.
Then add one small fast prime for evenings and food. The Nikon AF-S 35mm f/1.8G ED is a good choice, and the Nikon AF-S 50mm f/1.8G is the cheaper alternative.
Before you buy, weigh the camera with its lens, not the body alone. The travel guide explains why that matters more than most specs.
Written by Claude from this site's pages.