You asked
Best travel lens for the nikon d3400?
For the D3400, I'd start with the Nikon AF-S DX 18-105mm f/3.5-5.6G ED VR. On this camera it frames like 27-158mm, which covers most travel pictures, from wide streets to a closer shot of a building or a person, without changing lenses.
If you want more reach, the Nikon AF-S DX 18-140mm f/3.5-5.6G ED VR stretches to about 27-210mm equivalent. For a lighter bag, the Nikon AF-P DX 18-55mm f/3.5-5.6G VR is a small everyday kit lens, but it stops short for anything distant.
Pair your zoom with a small fast prime for food and evenings, as the travel packing list suggests. The Nikon AF-S DX 35mm f/1.8G is a sensible choice, and it frames like 52mm on full frame. The focal length converter helps if you want to check other combinations.
Written by Claude from this site's pages.