You have to do it manually, this sounds perhaps like a bad thing. It is however great! Especially as I used that feature so often on my recent trip.
The amazing thing is that you can actually use any point you want and save focus. When shooting a sunrise or better pre sunrise it's amazing one can save the perfect focus wide open and use it while it's completely dark. It's also great as super fast focus stacking with a lens like the 35.
You often only need to images and it even works handheld quite well. Save a near point as "hyper focus point" focus on the background shoot press the focus shoot again.
This can be done very fast.
My only complain is there aren't more custom focus points to save!
Christopher Hauser
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