Headline - DSLRs have imprecise focusing due to their mirrors

Started Apr 5, 2014 | Discussions thread
D Cox Forum Pro • Posts: 21,560
Re: Closed vs open loop focusing

crashpc wrote:

Of course. There is no max contrast until you reach some point behind where it lowers again.

But I still can focus at a place (distance) i remember with my eyes, and I´m also able to FF/BF. Did I turned PDAF or what? Any brain specialist to describe real focusing system of human vision (eyes and brain)?

I think you will find that you make small eye movements which bring the object of interest onto the centre of the fovea. The eye will then focus on that object.

However, you could experiment by setting up some wire mesh at various distances, one behind the other, and looking through the stack.

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