If you date your cameras, you marry your lenses. That's because, unlike digital cameras, a well-chosen lens can serve you for a very long time. I still have one lens that I bought thirty two years ago. And I bought it used. I doubt that will be the case with any of my digital cameras, ever. In the past, I was a lens speed freak and was willing to spend great sums of money to have very fast glass. I now realize that lust was misplaced. If I had it to do over again (and I do, and have) I would lean more on reasonably fast primes. Here's why. Moderately fast primes are (much) lighter, (much) cheaper and often just as sharp (or sharper) than their speedy siblings. For Nikon shooters, the Nikon 28, 50 and 85 f/1.8 trio of lenses are great examples of this. They weigh next to nothing in your bag and offer great performance. Also, I have moved away from primarily using fast zooms. Rather than a fast 24-70/2.8, I'd now opt for a trio of fast-ish primes and a decent, slower zoom to ...