Beautiful pics....and always great to see a happy puppy!!
Can you go a bit more in depth to explain when you say "I do have the 70-200 f/2.8 II and while it is an excellent work horse lens, it is not the same as the 135L. I use them for different purposes as well and I need them both. " ?
What are the specific purposes you use the 135L for? What specific purposes do you use the 70-200 f/2.8 II for?
Again, thanks to you and to everyone for the replies....
First off, I always use a prime over a zoom when I can. But if I need a zoom due to fast moving subjects (I can't run around and shoot a moving subject like a child or animal) or if I need excellent tracking then I would use the 70-200 over the 135L. I think the 70-200 also does a better job acquiring focus lock in low light than my 135L but I honestly don't even try to use the 135L in low light much at all. If I am unsure of what I'll run into situation wise then I would take the zoom.
Now if I know that I will control the shooting situation and the light is okay then I'll use the prime 135L. If I know that I need to carry the camera and lens around for many hours then I might also take the 135L since it is waaaay lighter. And if I want to get a semi-circular smear then I will use the 135L or the 85L wide open. The 70-200 wide open just can't produce that look.
Hope that helps.