Upload & Sell: On
The main reason that I decided to keep my 135/2L is that it's the only medium telephoto with high enough IQ to be a suitable backup for the 70-200/2.8L IS II. When I do events, I mostly use my f/2.8 zooms, but I sometimes also bring a case with my Canon fast primes. The 35/1.4L, and especially 50/1.2L and 85/1.2L II, provide shallow DOF photos that you just can't get at f/2.8. The 135L is what I'd use if my 70-200/2.8L IS II stopped working.