In the Canon camp we are all very familiar with the range of 70-200mm lenses. I am very impressed by the 135mm f/2.0 L though. I am considering getting rid of my 70-200mm lens in favor of the 135mm with the addition of a 1.4x extender. This would give me the ability to shoot at either 135 f/2.0 or 189mm f/2.8. I see huge gains in form factor and weight. I understand I would lose the 70-135, and the range between the two lenses. But I would also be gaining the f/2.0 at 135mm. And depending on which 70-200mm lens is used for the comparison, either gaining f/2.8 over f/4, and or losing image stabilization.
I really enjoy prime lenses, and the magic of the 135L is drawing me towards this as an option. Rather then spending the $1500 to outfit myself with this kit blind, I'm hoping someone else has tried this and can tell me it is a bad or good idea, and I can learn from your experience.
Am I really gaining quality or sacrificing?