I'm about to pull the trigger on the 70-200 f4. The price right now is perfect. Only negative I hear is that its slow and poor in low light. Will this be a big issue for me? I mainly will use it at outdoor sports events. I shoot alot of youth baseball and soccer. I recently purchased a 85 1.8 for basketball which worked incredible. I'm thinking if I ever need low light lens I can switch to the 85 outdoors. I have close access to all events I shoot so the range wouldnt be a issue. I have a 7D and wondering how is it with the 70-200 f4. Any help is appreciated.