graham_martin Offline Upload & Sell: On
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Steve Perry wrote:
The AF Lock setting is designed to be used with shutter release AF on Continuous AF. The idea is that you can use your shutter release in Continuous AF and then press the AF-L (or the AF-On button is that's how it's assigned) to lock in the focus at a certain distance.
For example, let's say you're on continuous AF and are taking a photo of a static subject. Let's say you put your AF point on the eye and then need to recompose. In this case, the camera would refocus as soon as you recomposed since it's on continuous AF. Whatever ended up under the active AF point would now have focus.
With AF Lock, you would focus on the eye, hold in the AF-L button, recompose, and shoot.
Hope that makes sense ...Show more →
What you are saying makes sense, but why would choosing AF-Lock Only in the a9 control cause the AF-ON button to no longer focus. I have tried it on two different D3s bodies, and the same thing happens each time. When I choose AF-ON in a9, the camera focuses when I press the rear AF button (i.e. the green dot lights up), but when I select lock only in a9, the camera does not focus and the green focus dot does not come on.
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