Let's say that the laws of the universe arbitrarily decided you could only have 4 lenses. I want to say 3 really but that may be too hard. What lenses would you choose? You don't have to be specific with model, although it's nice if you can.
For shooting with my 7D here are my choices:
1. 70-200 2.8. Enough reach for me and okay as portrait in a pinch.
Right now I have the Sigma EX, in the long term I will probably opt for the 2.8L with IS.
2. A 100mm-ish macro. Macro! and good for portrait too.
Right now I have the Sigma 105 EX but like the 70-200 I'd like to shift to the 100L.
3. The nifty fifty. Cheap. Fun. Disposable. I would of course L that if it were worthwhile for me.
4. A good general use - thinking the 24-70 2.8L or the 17-40 4.0L
uhhh... 4. Something wide, not sure which yet.
Only 4 is difficult but kinda practical to think about in terms of light enough to carry all day and still be versatile. I guess with the 24-70 I could nix the 50, but it's so light and easy.... maybe that counts as a ½ lens because of the size and weight?
Would be interesting to look at this as Prime/Zoom only and mixed too.