D800 + Sigma 150mm OS: AF problem

Started Dec 6, 2012 | Discussions thread
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Papout New Member • Posts: 2
Re: D800 + Sigma 150mm OS: AF problem

Thank You TOF Guy and very thans for your french translation.

In fact, I notice the problem is not present every time. I think it is due to the contrast of the subject. I have the problem only in macro (60 - 70 cm). Indeed, the collimator is small and does not cover a large area. I then practice by turning the focus ring to focus manually and then I press the shutter button to activate the AF ; and then there, all is perfect.

Best regards

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