Quote Originally Posted by George Slusher
Chuck, did you note that I said that I own and use both a 70-200mm f/2.8L IS and a 70-200mm f/4L IS? I've shot over 500 images with each lens, so I have some idea of what they do and the advantages/disadvantages of each. (Have you used both extensively?) If I have a choice, I'll use the f/4L IS. I can actually refute one of your statements, about low light shooting--see below. Again, if you haven't actually used both lenses, you may not realize the major difference in IS performance. Remember that the f/2.8L IS was introduced in 2001, the f/4L IS in 2006, so it benefitted from 5 years advance in technology.

George,


I stand officially refuted.


Thanks for your in-depth comparison. When I decide to step up to a IS version of the 70-200 I will definitely give the f4 version much more consideration. It may possibly be the betterchoice for a 5D FF body. I do shoot alot at f2.8 with my non-IS version but prefer f4 asthe default.