SteveR wrote:
We hope to travel after my wife retires and it would be nice to have something with some reach. The question is, is that the lens to do it? Does it really give me more than what I already have? Or, do I save up for something like a prime telephoto that I can put an extender on? As it is, I'm thinking of getting a 300mm f4 that a 1.4x would take out to 420, but that's not really the long lens I'm talking about.
unless you are planning a road trip, you may want to minimize what you need to carry. the 28/300 should be fine for anything other that possibly birds. instead of investing in a larger lens, think about upgrading your camera body to a d750, great full frame camera and will produce great photos.