azlynn wrote:
I have this lens and use it as my walk-around lens. A bit heavy, when paired with my camera, but so what? I really like it. A word of caution: when in Africa on safari, beware of changing lenses out in the bush... dust is everywhere, and with static electricity, you can get a lot of dust/grit in your camera if you are not careful. The two camera bodies suggestion is a good one...
I concur with this answer. I have been using this lens on my Nikon d7100 for over a year now with a trip to South America and one to Southern Africa and many other shorter trips. I got it to replace my Tamron 16-300 which had served me well but I wanted the extra reach of the 18-400 and it gives me what I wanted. It is a great walk-around travel lens when you don't know what you're going to want to shoot. This is specially true in Africa where we saw leopards and lions and elephants within five feet of our vehicle and then saw rhinos and other animals a couple hundred yards away just seconds later. Azlynn is also correct that changing lenses in the field in Africa is a losing proposition as there is always dust everywhere. In fact I keep mine wrapped in a towel when not in use--but still around my neck and ready to go. I'm sure there are sharper lenses for when you have the time to use them and change them but I am very happy with many of the shots I got. (I did keep a 50mm 1.4 prime for night shooting as that's the weakest point of the 18-400.