Better to upgrade lens or body for faster AF?

Started Feb 5, 2013 | Discussions thread
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calson Veteran Member • Posts: 7,689
Re: Better to upgrade lens or body for faster AF?

At most zoom settings the 70-300mm is a f5.6 lens and letting in 1/4 as much light to the AF sensors as would be true with a f2.8 lens. Less light means less contrast differentiation for the camera's AF sensors.

It would be interesting to see if face tracking mode provides better results.

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