I'm not sure why people think they need a wide range of focal lengths to be a good photographer. HCB needed maybe one or two. Maybe as you get better you need less. Personally, my normal lens (80 on med format) is good most of the time with the 150 getting ample service with the 50 doing less than 10%. Does that mean that I could only get along with one lens. I'd feel a lot more limited perhaps, but I'd bet that I'd get just as many good images. My favorite camera right now is my Fuji GA645zi.....it is a loud, obnoxious thing, but it allows me to be spontaneous in my shooting by not worrying about the exposure or the focus,,,,,or really the focal length. It varies from a gentle wide to a gentle tele. That is all I really need for most of what I shoot. For my Hassy, a 60 and 120 would be plenty.
Mark Fisher, photographer, product developer and lover of old mechanical things