Any photographer who walks long distances or spends hours on their feet with their equipment knows that every last ounce matters. And so, the idea of a single lens that can cover just about every focal length is quite intriguing. Tamron's 18-300mm f/3.5-6.3 Di III-A VC VXD makes that promise, and this excellent video review takes a look at it and the image quality and performance you can expect from it in usage.