When you are going for a hike or on a trip, you do not always want to carry a backpack full of lenses. Sometimes, a single lens that covers every focal length you could conceivably need is the better way to go. For Sony and Fujifilm APS-C shooters, there is the Tamron 18-300mm f/3.5-6.3 Di III-A VC VXD, and this great video review takes a look the kind of performance and image quality you can expect from it in practice.