70-200 f2.8 vs f4.

Started Mar 27, 2014 | Discussions thread
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70-200 f2.8 vs f4.
Mar 27, 2014

So I am currently trialling the f2.8 at home. I love it. Everything about it. But I think I wouldn't mind if it was a stop slow however, as I know IQ is basically the same.

What I want to know is:

1. Is there any difference in AF Speed?

2. Any difference in build quality?


 zenpmd's gear list:zenpmd's gear list
Canon EOS 5D Mark III Canon EF 70-200mm f/2.8L IS II USM Canon EF 24-70mm f/2.8L II USM Canon EF 40mm f/2.8 STM
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