What lens should I take when traveling abroad?

First of all, according to the purpose of your trip, you should bring more lenses when you are engaged in photography. Two cameras and three mirrors are more suitable. 5D3 hanging 16-35, 24-70, 60d hanging 70-200. A tripod is a must.

Just for fun, try to take this travel photo lightly. A SLR and a small telephoto machine are enough.

I accompanied my wife to travel to eight European countries. The purpose of shooting is to visit here. I brought a Nikon D700 and temporarily equipped a Longteng 28-300VC. The film doesn't show dogs. I also brought my wife a small card machine ZR700 with Casio 18 zoom, with an equivalent focal length of 25-450mm, which is suitable for both near and far.

It was taken by a card machine.