Fewer focal lengths
Over time, I’ve more and more reduced the number of lenses and focal lengths I use.
When I bought my first “serious” camera – a Nikon D40 in 2008 – I thought I needed more lenses to cover all the focal lengths. And so I bought more lenses. I had lenses to cover everything from 10mm (we’re talking APS-C here) all the way up to 200mm. Plus a fast 50mm-equivalent prime for low light.
But as the years went on, I stopped using most of these lenses and their camera systems. I simply increasingly came to know what I value about a camera system, what kind of photos I like to take, and what focal lengths suit me best.
So at the moment, I’m mainly using a Leica M with a 35mm lens. That’s all I need.