DotTune: Video Tutorial for AF tuning without photographs

Started Feb 18, 2013 | Discussions thread
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Horshack OP Veteran Member • Posts: 5,803
Re: Kaj's question is a good one IMO

Horshack wrote:

The center of the focus-dot confirmation range is a proxy for the where the camera itself would focus, so the balance of front/rear DOF should be the same vs. a body+lens combo requiring no fine tuning. In the 'additional notes' section of the video I discuss the option of using a 3-D focus target like a LensAlign for those who want to DotTune to a precise point within the DOF if they want control over the balance of front/rear DOF.

But admittedly using a 2-D target not only robs you of precise DOF balance but may also mean you're tuning closer to one end of the DOF extreme than you'd otherwise want to be, thus not centered on whatever the natural front/fear DOF balance would be for a theoretic perfectly tuned body+lens. Such is the compromise of using a 2-D target for any tuning method.

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