70-200 f2.8 vs f4.

Started Mar 27, 2014 | Discussions thread
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zenpmd
zenpmd Senior Member • Posts: 1,129
70-200 f2.8 vs f4.

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?

Thanks!

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