Canon 6D and Lens question 70-200 F2.8 V2 or F4 IS

Not sure if this question needs to go in the lens section or here, but just got the Canon 6D and have been debating between the 2 lenses. Initially was thinking of buying the 70-200 F2.8 VII lens, but than after reading reviews and comparisons it seems can save the extra $1000 and weight by just going the F4 IS route.

I plan to use the lens for casual use, some sports at times and mostly kids portraits. Low light situations are not too many, but seems the 6D can handle that.

From experience need to know if there are any 6D users out there with these lenses and what your recommendation would be as right now the F4 is for $1099.


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