You asked
Is the nikon z dx 50 250mm f 4 5 6 3 vr good for travel?
Here is what the site says about that.
From Nikon Z DX 50-250mm f/4.5-6.3 VR: Nikon Z DX 50-250mm f/4.5-6.3 VR: A zoom lens by Nikon for APS-C cameras, 50-250mm f/4.5-6.3. Specs - Maker: Nikon - Focal length: 50-250mm (zoom) - Maximum aperture: f/4.5-6.3 (it gets darker as you zoom in) - Made for: APS-C sensors - Mounts: Nikon Z - Stabilised: yes - Autofocus: yes What it frames like - On APS-C (Nikon Z): like 75-375mm on full frame; f/4.5-6.3 gives about the depth of field of f/6.8-9.4 there. - ...
From Travel: Travel: A travel camera has to be good at everything and light enough that you still carry it on day five. Landscapes, food, street scenes, people, the inside of a dim church: you'll shoot all of it, often in a hurry, and you won't want to change lenses on a crowded square.
Quoted from this site's pages.