I know it is kind of early to ask... but I am planning to shoot the year end marathon. I have the following lens which I am hoping to use,
1) 70-200mm f4L IS
2) 300mm non IS
Since both of them are 'L' lens, I am expecting that they are almost of the same sharpness (maybe the 300mm is a tact sharper). I am wondering which lens should I use? I am new to sports photography so I hope to have some advice.
Also, I am wondering if anyone could recommend a combination of either of the abovementioned lens with a 1.4x TC?
Thanks in advance.